The following prefixes are doing the scam rounds right now:
027254....
027257....
027253....
I have blocked no less than 12 of these (now relentless) scam calls. As they realise that I block one set of prefixes they then move on to using the next set etc etc.

I also receiving calls everyday from 02 7257 88xx & 03 9100 39xx. Dont answer. Its a scam.

I answer “hello can l help you?”
They hang up ???!!!!

This number always call and hang up

Can’t the phone number provider do something about this by cancelling the callers access to these phone nyumbers.

7257 8802 and 7257 8805 scam number
call
don't leave message
call the next day, similar time, slightly varied number
don't answer

Did not answer

I answered and they hung up. They have tried to call again and i didnt answer, no message was left.

Answered the call. No one at the other end.

"Free hot water" scam.

Caller: (02) 7257 8805

Missed call
Left no voice message
I called back to the number disconnected

Didnt leave a message, didnt call back.

Scam hot water...very rude