Cardmember Services. P.O. Box 6294. Carol Stream, IL 60197-6294. If you want to reach Chase credit card customer service by telephone, the phone number to call is: 1-800-432-3117. You can also pay your bill by phone at 1-800-436-7958.Is Chase a credit union?
Chase is not a credit union it is a for profit corporation. It is a commercial bank. A federal credit union is not for profit and is owned by its share holders and the profit goes back to its members in the form of low interst rates and dividends.