Cardmember Service

Our 24/7 U.S. - based Cardmember Service can help you.

  • Call us

    Have questions about your statement or payments? Need to report a lost or stolen card?

    Call us toll-free:
    866-845-3079 (we accept relay calls)

    International collect:

  • Mail us

    You can write us anytime at:
    Cardmember Customer Service
    P.O. Box 6354
    Fargo, North Dakota 58125-6354

    Mail Payments:
    Cardmember Service
    P.O. Box 790408
    St. Louis, MO 63179-0408

    Overnight Address:
    Cardmember Payments
    3180 Rider Trail S
    Attn: 790408
    Earth City, MO 63045