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 customer call center at (800) 383-3595 immediately.
• PHONE
• • Customer Service 800.383.3595
• MAILING
• Payment address

  MasterCard
  PO Box 37035
  Boone, IA 50037-0035

• 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:
  • Dispute Department
    PO Box 10409
    Des Moines, IA 50306

• IF YOU SUSPECT FRAUD:
• • Call (800) 234-5354 immediately to report any fraud. Complete the MasterCard Fraud Affidavit and mail to:
    
    
  • Mail:
  • Fraud Department
    PO Box 10409
    Des Moines, IA 50306