NBN scam call, I asked to talk with a supervisor as I did not believe it to be a real call, waited for a moment and the same guy, Indian accent, was on the phone claiming to be a supervisor.
I called him on this to which he became verbally aggressive. I wanted him to advise me of my name, he came up with the name of the gentleman I purchased the house off some 15 years ago.
I advised I believe this is a scam call, he asked what evidence do I have, I advised I have had this same call on a regular basis, just never managed to talk to a person before, and I had been advised my internet is to be disconnected in 24 hours in a recorded message each time.

called and immediate hangup. no answer when trying to return call, just ringing out.

called, no background noise, slight delay then hangup

wanted to know who pays my electricity bill. knew personal information and address.

Answered the phone .....said hello and they just hung up

They just keep on calling and have done so for the last 2 days! I haven't bothered to answer. I did return the call -there was no answer. I