3 thoughts on “Costco Credit Card Login – Payment – Address – Customer Service”

  1. Hello James,

    Please contact the AMEX/Costco credit card customer service line directly at 1-800-528-4800. Please have your card handy when you call.

    Kindest regards,

    Support,
    CreditCardPayment.net

  2. I am trying to find out from American Express if my total balance has been paid off. We used the card @ Costco for some initial purchases, never received a bill, got charged a lot fee’s and still have not been able to reach AMEX. Please Help!

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