Caller: National Crime Authority

Robot voice message from the above. I didn't listen to the whole call this time but from a previous call from them I think they're saying either some of your account details have been breached by someone or you have breached someone else's. Either way it's some type of scam trying to scare into thinking you've broken the law in an egregious way. Don't listen any further past the robot voice, or just hang up and block the number. These calls may come through on various mobile numbers.