How to Contact GM MasterCard Customer Service
Phone Number: 1-800-947-1000
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,for some reason,I can’t use my gm mastercard..
Capital One, Had a GM Master Card for 18years with $15000.00 line of credit. Within a week of receiving my bill a check in full is in the mail. My 74 year old wife had to fly to Michigan and got a $5.00 cup of coffee at Logan airport. When she got to Michigan and went to a store to purchase $68.00 items she was told they wouldn’t except her card. For 45 min she was in line until Capital One paid for her things. I called them tell them she has no cash with her. We do every thing with our card. Told me I have to tell them when ever we travel. you kidding me. Capital One sucks and when my wife is home I’ll get some other card.