The elderly man, who has other serious health issues, suspected he had been the victim of some form of fraud as he could make out that the document he had signed was blank.
Two days after visiting his local bank branch in the Valencian city of Villarreal, the pensioner took the bank document to the police.
Officers informed him the sheet of paper was a withdrawal slip for €27,000, an action he had not requested from the bank manager or other staff.
According to local daily El Mercantil Valenciano, bank staff “gave excuses” and “showed opposition” when police officers requested the relevant documents for their investigation.
Four bank employees have so far been charged with fraud as well as a family member of one of them who is also thought to have benefitted from the illicit deal.
Police haven’t ruled out the possibility that other cons may have been carried out by the same people on other vulnerable or elderly bank customers.