Scammer claiming he was from the security department of NAB and asking me if I had authorised a charge of $835 to my account for medical services. I duly informed him that NAB would never call from a mobile number and that I would be reporting him to scam watch and to the ACCC. He said ‘Who told you?’ like knowing NAB not calling from a mobile was a trade secret! lol. Think this scam had previously tried to contact me earlier today with No Caller ID, which I never answer.