How to report unauthorized transactions?

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Contact Your Bank or Card Issuer Immediately​

The most important step in answering how to report unauthorized transactions? is contacting your bank or credit card provider right away.

Call the customer service number listed on the back of your debit or credit card and:

• Report the suspicious transaction
• Request to block or freeze your card
• Ask for a replacement card
• Initiate a fraud investigation

Most banks offer zero-liability protection if you report unauthorized transactions promptly. Acting fast reduces your financial risk.