Caller: An energy company

My bills are all paid up so I suspect this is now the 17th call I've had from several different numbers since making the mistake of using iSelect. Never again. Blocked.

Scam I think. Said they were from a company called "Energy ...." No name given. Strong South Asian accent.
Called me to talk about my latest bill. I asked if they knew my address, they said yes and stumbled before reading out some random one. I hung up.

This number called me and the guy said he was Nick calling from my home's electricity company. I asked which electricity account he was talking about and he tried to ignore me. He kept repeating himself and I asked which company. He just then said, "Bye, bye."

I called back number (03) 9114 8642 rang once then gets disconnected automatically

No answer after 11 seconds