keep calling - no message left - ?SCAM

Again this number calls. It's not even a valid Australian number, how does that work?. No message. Directly after blocking a bit coin scam thing on Twitter.. but that is probably coincidence. But who knows.

called 2 days in a row - no voicemail left

Caller: No message left

I don’t answer numbers I don’t know and if they don’t leave a message then sucks to be them

Have answering service don’t identify themselves. Don’t leave message