How do i contact discover card? Phone Contact Numbers. If you need to contact Discover Card for customer service purposes, you can use one of the numbers listed below. Discover Card customer service (US): 1-800-347-2683. Discover Card customer service (outside US): 1-801-902-3100. TDD: 1-800-347-7449.What is the telephone number for discover card? Discover Card customer care number : 1-800-347-2683. Support number : 1-801-902-3100. Discover Card Cancellations: Executive Customer Relations : 1-866-222-0536. Thank you for business Discover, please enter the last four digits of your account number, or to use for a replacement account, check the standing of your application, or report a lost or.What is the toll free number for discover card? Discover Credit Card United States toll free customer service number : 1-800-347-2683, 1-800-347-7449.What is discover contact number? Contact Discover. For your convenience to contact Discover We have provided all possible information of Discover. You can contact Discover on the given phone number 1-800-347-2683, 1-801-902-3100. To know the address location of Discover it is also presented here P.O. Box 6103, Carol Stream, IL, U.S..