Contact Us

We are happy to assist you. If you have a general question regarding your credit card account, please review our Frequently Asked Questions. Otherwise, contact us by phone or mail.

  • LOST AND/OR STOLEN:
    • If you suspect your card has been lost and/or stolen, please call our member call center at 866-570-1238 immediately.
  • PHONE:
    • Member Service
      • 866-570-1238
    • For calls outside the United States
      • 00-1-515-457-2082
  • MAILING:
    • Payment Address
      • Tower Federal Credit Union
        PO Box 65112
        Baltimore, MD 21264-5112
  • DISPUTE A TRANSACTION:
    • If you do not recognize a charge or feel you were billed an incorrect amount, please follow these three steps. First, double-check your receipts and check with other authorized users of your card. Second, contact the merchant where the purchase originated. Finally, if you are unable to resolve your dispute with the merchant, complete the MasterCard Dispute Form and mail to:
    • Mail:
      • MasterCard Disputes
        PO Box 10409
        Des Moines, IA 50306-0409
      You may also call our member call center at 866-570-1238 if you have further questions.
  • IF YOU SUSPECT FRAUD:
    • Call 866-570-1238 immediately to report any fraud. Complete the Fraud Affidavit and mail to:
    • Mail:
      • MasterCard Fraud Dept.
        PO Box 10409
        Des Moines, IA 50306-0409