100 people arrested in UK’s biggest fraud investigation
More than 100 people have been arrested in the UK’s biggest ever fraud operation, which brought down a website police describe as a “one-stop spoofing shop” used by scammers to steal tens of millions of pounds from Britons via fake bank phone calls.

Didn't recognise the number. Answered, waited a few seconds for a response and an automated message (female) just said "goodbye" and hung up.