Welcome to the BOL threads
Regardless of what should have been done in 2004, you cannot deny a consumer their right to asset a Reg E claim. Also, while Reg E allows the institution to require written confirmation of an error as a condition of providing provisional credit, we must still investigate in response to an oral claim and we cannot require that the written confirmation be an affidavit.
It sounds like our customer made a claim that there is a withdrawal that he/she did not perform and we now have an obligation to investigate it and determine whether or not an error occurred.
Lastly, whether you choose to keep this person as a customer or give them another ATM/debit card is a business decision. The fact that a customer may have a disability does not mean that they have been declared incapable of managing their own affairs unless the court has formally appointed a guardian for them and I would not want to be in the business of making unlicensed diagnosis of our customers.
Work the Reg E claim as required by regulation, and as Randy said, check with legal counsel with respect to the liability risks we may have to keep/close the account.
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