If your Comcast Xfinity internet is down, your bill changed, your cable TV service is not working, your Xfinity Mobile order is delayed, your equipment return has not been credited, or you need help canceling service, start with the correct Xfinity support route. Comcast residential internet, TV, voice, home security, and mobile services are generally handled under the Xfinity brand, while business accounts are handled through Comcast Business support.
Comcast Xfinity Customer Service Phone Number and Support
Use the following Comcast and Xfinity customer service options for internet, TV, voice, mobile, billing, outages, equipment returns, cancellations, refunds, business accounts, accessibility support, and complaints:
- Comcast Xfinity Customer Service Phone Number: 1-800-934-6489 / 1-800-XFINITY
- Xfinity Support Center: Xfinity Support
- Xfinity Contact Page: Contact Xfinity
- Xfinity Assistant: Chat with Xfinity Assistant
- Xfinity Text Support: Text a question to 266278
- Report or Check an Outage: Xfinity Outage Map
- Outage Text Option: Text OUT to 266278
- Xfinity Mobile Customer Support: 1-888-936-4968
- Comcast Business Support: 1-800-391-3000
- Comcast Business Support Availability: Comcast Business says agents are available 24/7
- Xfinity Accessibility Support Center: 1-855-270-0379
- Accessibility Email: [email protected]
- Return Xfinity Equipment: Xfinity Equipment Return Help
- Canceling Xfinity Service: What to Know When Canceling Xfinity
- Corporate Address: Comcast Corporation, Comcast Center, 1701 JFK Boulevard, Philadelphia, PA 19103
- Comcast Corporate Phone Number: 1-215-665-1700 (corporate office, not the fastest route for routine Xfinity support)
- Website: Xfinity.com
Choose the Correct Comcast Xfinity Support Route
Comcast support can involve several different brands and account types. Most residential internet, TV, voice, home security, and mobile support is handled through Xfinity. Business accounts are handled through Comcast Business. Corporate office contacts are best reserved for formal correspondence or unresolved escalation after standard support routes have been tried.
Xfinity Internet, TV, Voice, and Home Support
For residential Comcast Xfinity internet, cable TV, home phone, streaming, modem, gateway, Wi-Fi, Xfinity app, account, and billing issues, call 1-800-934-6489, use the Xfinity app, or start with Xfinity Assistant.
Xfinity Outages and Service Down
If your Comcast Xfinity internet, TV, or voice service is down, check the Xfinity Outage Map, use the Xfinity app, sign in to the Support page, or text OUT to 266278. If there is a known outage, Xfinity may show outage updates before normal troubleshooting is available.
Xfinity Billing, Payments, and Refunds
For billing questions, payment arrangements, late fees, autopay, refunds, returned payments, plan changes, taxes, fees, equipment charges, or unknown charges, use the Xfinity app, My Account, Xfinity Assistant, or call 1-800-934-6489. If you are owed a refund, Xfinity says refunds generally go back to the last payment method on file in about 7-10 days.
Xfinity Mobile
For Xfinity Mobile billing, activation, device orders, SIM/eSIM, number transfers, damaged/lost/stolen delivery, account access, or device support, call 1-888-936-4968. Xfinity Mobile support is separate from many residential internet and TV issues.
Comcast Business
For Comcast Business internet, phone, TV, outages, billing, service changes, or cancellation, call 1-800-391-3000. Comcast Business says support agents are available 24/7. Some enterprise, Ethernet, VoiceEdge, hospitality, and teleworker accounts may have specialized business support numbers.
Accessibility Support
For accessibility support, including help for customers with disabilities, call 1-855-270-0379 or email [email protected]. Xfinity lists the Accessibility Support Center as available seven days a week.
What to Have Ready Before Contacting Comcast Xfinity
Before calling Comcast Xfinity customer service, using Xfinity Assistant, chatting with support, or visiting a store, gather the details that match your issue:
- Xfinity account number
- Service address and billing ZIP code
- Name, phone number, and email address on the account
- Xfinity ID, but do not post passwords or one-time codes publicly
- Bill date, charge amount, payment confirmation, or refund details
- Modem, gateway, cable box, remote, or Xfinity Mobile device details
- Equipment serial number or return tracking number if relevant
- Outage start time, affected services, and troubleshooting steps already tried
- Technician appointment date, confirmation number, and no-show details if relevant
- Order number, install date, cancellation confirmation, or support ticket number
- Store visit details, representative names, or prior case notes if available
Common Comcast Xfinity Customer Service Issues
Customers commonly contact Comcast Xfinity customer service for help with:
- Internet outages, slow speeds, Wi-Fi problems, and modem or gateway troubleshooting
- Xfinity TV, streaming, cable box, DVR, remote, and channel package issues
- Xfinity Voice phone service problems
- Xfinity Mobile activation, device orders, SIM/eSIM, billing, and number transfers
- Billing increases, promotional rates ending, taxes, fees, and equipment charges
- Payment arrangements, late fees, payment posting, and refunds
- Equipment returns, unreturned equipment fees, UPS tracking, and store drop-offs
- Technician appointments, missed appointments, installation delays, and repair visits
- Moving service, transferring service, or changing plans
- Canceling service, final bills, and contract or agreement questions
- Account access, Xfinity ID, password resets, and security issues
- Fraud, phishing, fake support calls, payment scams, and account takeover concerns
Comcast Xfinity Outage and Internet Troubleshooting Help
If your Xfinity internet, TV, or voice service is not working, first check the Xfinity Outage Map, Xfinity app, or Support page. If there is a known outage in your area, normal modem troubleshooting may not fix the issue until service is restored.
If no outage is shown, restart your modem or gateway, check cables and power, test another device, check Wi-Fi signal strength, and use the Xfinity app or Xfinity Assistant to run diagnostics. Save screenshots of outage notices, speed tests, error messages, and appointment confirmations if the problem keeps happening.
Comcast Xfinity Billing, Fees, and Refunds
Xfinity bills may change because of promotional rates ending, plan changes, equipment rental fees, taxes, broadcast TV fees, regional sports fees, mobile charges, late fees, service changes, one-time installation charges, technician visits, returned payments, premium channels, or streaming subscriptions.
If you believe a bill is wrong, compare the current bill with the prior bill and ask which line item changed. Xfinity also offers self-service payment arrangements and past-due balance options for eligible customers through the app, website, and Xfinity Assistant.
Xfinity Equipment Returns and Unreturned Equipment Fees
If you canceled service, changed equipment, or received replacement equipment, return the old Xfinity equipment promptly. Xfinity says equipment can be returned through an Xfinity Retail Store or with a prepaid return label and UPS drop-off. Keep the receipt or tracking number until the account shows the equipment was received.
If you receive an unreturned equipment fee after returning equipment, save the UPS drop-off receipt, tracking number, equipment serial number, return date, and any store receipt. Contact Xfinity with those details before disputing the charge with your payment provider.
Canceling Comcast Xfinity Service
Before canceling Xfinity service, ask about final bill timing, prorated charges, remaining balances, equipment returns, mobile device payment balances, contract or agreement terms, AutoPay, refunds, and email/account access after cancellation. Xfinity’s cancellation information warns that final bills may include charges for unreturned equipment.
If you are switching providers and want to keep your phone number or mobile number, complete the number transfer before fully canceling the old service. Canceling first can sometimes make number transfers harder.
Xfinity Mobile Support
Xfinity Mobile customers should use 1-888-936-4968 for mobile support issues such as device orders, SIM/eSIM activation, number changes, mobile billing, lost or stolen deliveries, warranty support, and account access problems.
For damaged, lost, or stolen mobile deliveries, Xfinity says customers should call Xfinity Mobile support within the required timeframe rather than filing directly with the shipping carrier. Save your order number, tracking number, delivery photo, and device details.
Comcast Business Support
Comcast Business customers should use 1-800-391-3000 for most business internet, TV, phone, billing, and outage issues. Comcast Business says agents are available 24/7. Business cancellation requests may have specific phone-only requirements and local-time support windows.
For business outages, document the outage start time, location, affected services, equipment status, and any service-level agreement details. Business customers with enterprise, Ethernet, VoiceEdge, hospitality, or teleworker accounts may have specialized support contacts.
Comcast Xfinity Scam and Fraud Warnings
Be careful with fake Comcast or Xfinity phone numbers, refund messages, payment links, technician calls, modem-upgrade notices, rebate offers, gift-card demands, and account-security texts. Scammers may try to get your Xfinity ID, password, one-time code, account number, payment card, modem details, or personal information.
- Use Xfinity.com, the Xfinity app, Xfinity Assistant, 1-800-934-6489, or your official bill before sharing account information.
- Do not pay a caller with gift cards, cryptocurrency, wire transfers, or payment apps.
- Do not share one-time codes, passwords, full card numbers, or account screenshots with an unverified caller.
- Be cautious of fake “refund,” “service shutoff,” “modem upgrade,” “technician appointment,” or “past due” messages.
- If your Xfinity account changes without permission, change your password and contact Xfinity immediately.
- If you receive a suspicious communication, call 1-800-934-6489 to verify whether it is legitimate.
Comcast Reviews and Complaints
The live CSN page currently shows 2.8 out of 5 stars based on 12 reviews for Comcast. Visible reviews are mostly older and include complaints about unresolved internet and phone service problems, long hold times, missed technician appointments, difficulty reaching supervisors, promised callbacks that did not happen, and frustration with repair escalation.
Because many of the visible CSN reviews are older, they may not reflect every current Comcast or Xfinity support experience. Customers comparing internet, TV, mobile, and phone providers may want to consider pricing, promotional terms, internet reliability, outage communication, billing transparency, equipment fees, technician appointment handling, cancellation rules, and how quickly support escalates unresolved problems.
How to Escalate a Comcast Xfinity Complaint
If your Comcast Xfinity issue is not resolved after your first support contact, take these steps:
- Write down the date, time, phone number, app route, chat route, store location, and summary of each contact.
- Ask for a case number, support ticket, outage report, billing dispute reference, or appointment confirmation.
- For billing disputes, save bills, payment confirmations, promotional terms, refund records, and screenshots.
- For outages, save outage map screenshots, text alerts, speed tests, and dates service was unavailable.
- For equipment returns, save UPS tracking, store receipts, serial numbers, and return confirmations.
- For technician problems, save appointment confirmations, arrival windows, no-show notices, and repair notes.
- For unresolved Xfinity Mobile issues, keep order numbers, tracking records, device details, and mobile support case numbers.
- If ordinary support does not resolve the issue, use Xfinity feedback or formal dispute routes and keep copies of all documentation.
Comcast Competitors and Related Customer Service Pages
If you are comparing internet, TV, phone, mobile, and cable providers, you may also want to review these related CSN pages:
- Xfinity Customer Service
- AT&T Customer Service
- Spectrum Customer Service
- Verizon Customer Service
- Cox Communications Customer Service
- Verizon Fios Customer Service
- T-Mobile Customer Service
Related Resources
- Comcast Corporate Office Headquarters
- Xfinity Corporate Office Headquarters
- ChargeOnMyCard.com for help identifying unknown Comcast, Xfinity, internet, mobile, equipment, or subscription charges
- ThinkItsAScam.com for fake Comcast support, Xfinity refund, utility-style shutoff, technician, modem, and billing scam warnings
- ZeroStars.org for customer reviews and complaint experiences
- FCC Consumer Complaints for communications-service complaint guidance
Comcast Xfinity Customer Service FAQs
What is the Comcast Xfinity customer service phone number?
The main Comcast Xfinity customer service phone number is 1-800-934-6489, also written as 1-800-XFINITY.
Is Comcast the same as Xfinity?
Comcast Corporation is the parent company, while Xfinity is the brand used for many residential internet, TV, voice, home, and mobile services. Most residential service issues should be handled through Xfinity support.
How do I report a Comcast Xfinity outage?
Use the Xfinity Outage Map, Xfinity app, Support page, or text OUT to 266278. You can also call 1-800-934-6489.
What is the Xfinity Mobile customer service number?
The Xfinity Mobile customer service number is 1-888-936-4968. Use this number for Xfinity Mobile billing, devices, SIM/eSIM, orders, account access, and mobile support.
What is the Comcast Business customer service number?
The Comcast Business customer service number is 1-800-391-3000. Comcast Business says agents are available 24/7.
How do I return Comcast Xfinity equipment?
Xfinity says equipment can be returned through an Xfinity Retail Store or with a prepaid return label and UPS drop-off. Keep your receipt or tracking number until the equipment return is credited.
How long do Xfinity refunds take?
Xfinity says refunds generally go back to the last payment method on file in about 7-10 days. Refund timing can vary depending on account status and payment method.
How do I cancel Comcast Xfinity service?
Review Xfinity’s cancellation information, call customer service, and ask about final bills, equipment returns, refunds, contract terms, mobile device balances, and AutoPay before canceling.
What is Comcast’s corporate address?
Comcast Corporation’s official corporate contact page lists Comcast Center, 1701 JFK Boulevard, Philadelphia, PA 19103.
Is CustomerServiceNumbers.com affiliated with Comcast or Xfinity?
No. CustomerServiceNumbers.com is an independent consumer contact and review website and is not affiliated with Comcast Corporation, Xfinity, Comcast Business, NBCUniversal, or any telecom provider.
Page Update Note
Updated June 2026: This page was refreshed with current Comcast Xfinity customer service routing for internet, TV, phone, mobile, billing, outages, equipment returns, refunds, cancellations, business support, accessibility support, scam warnings, and escalation.
Why Trust CustomerServiceNumbers.com?
CustomerServiceNumbers.com has provided customer service phone numbers, company contact details, and consumer review information since 2004. CSN is an independent consumer information website and is not owned by Comcast Corporation, Xfinity, Comcast Business, NBCUniversal, or any telecommunications provider. We help customers find support routes, compare service experiences, and share reviews about customer service interactions.
Share Your Experience
Have you contacted Comcast or Xfinity customer service about internet outages, billing, TV service, Xfinity Mobile, equipment returns, refunds, cancellations, technician appointments, business support, accessibility support, fraud, or complaint escalation? Share your experience below to help other customers understand what to expect. Do not post account numbers, service addresses, phone numbers, Xfinity IDs, modem MAC addresses, payment details, order numbers, screenshots with private information, or technician notes tied to your home.
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CustomerServiceNumbers.com is not affiliated with Comcast Corporation, Xfinity, Comcast Business, NBCUniversal, or any telecommunications provider. Phone numbers, links, addresses, support options, hours, billing rules, refund timing, outage tools, equipment return procedures, cancellation rules, business support routes, mobile support routes, accessibility contacts, and account policies may change. Always verify important account, billing, outage, mobile, equipment, cancellation, refund, business, accessibility, and support information directly with Comcast, Xfinity, Comcast Business, or the appropriate official support provider.
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