The victim was suspicious so ended the call and then contacted the police who confirmed that no such officer existed. Sergeant James Stopford, from the Welwyn Hatfield Safer Neighbourhood Team, said: “Fraudsters often try to trick people, particularly the elderly and vulnerable, out of their money by telephoning them at home and pretending to be someone trustworthy. In both these incidents, the police officers do not exist. “The vital things to remember are that your bank and the police would: • Never ask for your bank account details or PIN number over the phone, so do not disclose these to anyone, no matter who they claim to be.