Stop a Debit or Credit Card transaction

How to stop a debit or credit card transaction Unfortunately, we cannot put a stop on a card transaction if it’s already pending. Debit card transactions will be paid as long as there is sufficient funds available in your checking account at the time the authorization is requested If this is an unauthorized transaction, contact… Read more »


A Personal Identification Number (PIN) is issued when a new card is ordered. PIN’s are automatically generated, therefore MCCU does not have the ability to access your PIN or change it. If you have misplaced or forgotten your PIN, contact the CU and we can assist you with ordering a copy. You would receive your… Read more »

Card activation

To activate your Credit Card: Call 1-800-466-0040 If you are a co signer on the loan, you would need the last four of the primary member’s SSN to activate your card

Card Maintenance

To report a Lost or Stolen Credit Card: Please call the appropriate phone number listed below: During Normal Business Hours (M-F, 9 am-5 pm MST): 303-770-4468 or toll-free1-888-383-5926 After Normal Business Hours: 1-888-241-2510 Outside of the US, call collect 909-941-1398 If you have called after normal business hours, please make sure to contact the Credit… Read more »