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Mastercard Debit or ATM cards 

To cancel a lost or stolen American Bank Mastercard debit card or ATM card during our hours of operation, call your banker at (800) 255-7911. 
 
To cancel a card 24/7, call Mastercard at (866) 546-8273.
 

AMERICAN BANK CREDIT CARDS

To cancel a lost or stolen American Bank Visa or American Express credit card 24/7, call (800)-558-3424 or log in to your account(Opens in a new Window),, . You. You may also call your banker or our Central Operations at (800) 255-7911, and we'll walk you through it.