First an unlisted number rang my mobile and left a "Hello Hello..?" voice message as bait.
Then this number rang right after and left a voice message with the same Indian accent from a call centre mentioning my first name.
Then an unlisted number rang again 5 minutes later.

Bugger off and go away and die a slow painful death you scammers.!!

Caller: They prevented me from knowing

This number called me once on 21 Oct, then twice today on 23 Oct. Missed the call every time, no message was left.
I called back and got an automated "this number is disconnected" message.
I looked up the number and saw from the previous user's notes that this australian number is a scammer.
So I blocked it and shared my experience here. Stay safe, and go vote.

Got a missed call from this number, calling back didn't work