Where can I find the Identity Theft Affidavit form? Click here to access the ID Theft Affidavit. Have more questions? Submit a request 0 Comments Please sign in to leave a comment. Related articles How to set the PIN on your Mastercard. How does 3Rivers help protect me from fraud? Call Back I have a charge on my debit card or credit card that I don’t recognize. What do I do? Mastercard debit card or Mastercard Credit Card was lost or stolen. Who should I call?