Had one today and he claimed he was from Bank of Melbourne about unauthourised transactions. Cunning, told me to call from the website as I said I was suspicious. Rang my bank and they had no records of the Fraud team looking into my account.

Caller claimed to be from the bank (NAB) calling about payments to (or from) a Westpac account. Caller ID came up as Saasabi. Hung up and blocked.