Debit Cards

To report a lost or stolen MasterCard Debit Card call:
Inside the US: 1-800-528-2273
Outside the US: 1-812-647-9794
 
To dispute a transaction, call:
1-800-808-6402
 

Credit Cards

To report a lost or stolen MasterCard Credit Card call:
Inside the US: 1-800-499-7728
Outside the US: 1-727-299-2449
 
You can also report your lost/stolen credit cards via Online Banking under View My Credit Card.