Contact Us

We’re happy to assist you. If you have a general question regarding your Orange County’s Credit Union MasterCard card or account, please review our Frequently Asked Questions. Otherwise, contact us by phone, email, or mail.

  • PHONE
    • Member Service   (888) 354-6228
      • Weekdays: 8 am to 7 pm
      • Saturday: 9 am to 2 pm
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  • E-MAIL
    • If you have a question or comment you may send us a message through Secure Messaging in Online Banking or the Mobile App.*

      Close this window and return to your main Orange County’s Credit Union account balances area. From the menu, click Messages to reach your secure inbox. After you send us a secure message, we will respond in 1 business day.

      *Message and data rates may apply.
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  • U.S. MAIL
    • Payments - MasterCard Only
      • MasterCard
      • PO Box 14450
      • Des Moines, IA 50306-3450

    • In Case Of Errors Or Questions About Your Reported Credit
      • Write us at:
      • Orange County’s Credit Union
      • Credit Dispute Department
      • PO Box 11777
      • Santa Ana, CA 92711-1777

      • Please provide the following information:
        1. Tell us your name, account number, loan number, address, and phone number.
        2. Describe the error and the basis of the dispute, and explain why you believe there is an error.
        3. Provide all supporting documents to substantiate the dispute, such as a copy of the relevant portion of your consumer report that contains the allegedly inaccurate information, a fraud or identity theft affidavit, a police report, a court order, or account statements.
  • 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 or fax to:
    • Mail:
      • Disputes Department
      • PO Box 11777
      • Santa Ana, CA 92711-1177
    • Fax:
      • (714) 885-7660

  • IF YOU SUSPECT FRAUD:
    • Call (888) 354-6228 immediately to report any fraud. Complete the MasterCard Fraud Affidavit and mail to:
    • Mail:
      • Fraud Department
      • PO Box 10409
      • Des Moines, IA 50306