I did not recognise number so did not answer and they didn't leave a message, so assumed it’s not important. I checked here and found great information, thank you everybody and now I know who called me, and will now block

persistent calls almost daily for several weeks

Electricity pricing new my details, angry when told not interested.

Caller: Electricity Slammers

Total morons. Incapable of rational thought. Block them.
Cunningly call in the first half hour after 5PM, because they think you have finished work. Obviously they have a block of IP addresses.
They appear to be Indians calling from offshore engaged by Chinese on shore.
Will lie through their back teeth to get your data, The sale may only get them a few cents in commission even if it is genuine. Expect to be ripped off sometime in the future.

I returned a call from (03) 4344 4617 but reached vm for Benefit Deal

rang about electricity prices..knew my name and address thou