When I picked up the call there was no answer. Call disconnected in less than 5 seconds.

Caller: Telemarketer

Called back, it's a telemarketer.

Caller: unsure

it was a call center sounding background, with an Indian accent man asking me about my overdue electricity bill. to try and confirm my address - he said my postcode 7018 (this is not my postcode) after I said it wasn't my postcode - he immediately hung up.

Called back as they had called 3 times in an hour. Call centre wanting to speak to me about electricity

Caller: A company called first? Something

Offering cheaper power bills if you paid them on time. Told him not interested but he had all my details of my address.

called twice. I reckon it's a scammer

A man said something about a fuel bill.

Mistakenly answered this unknown number as it is in my state, they hung up as soon as I did. Won't answer again.

Yep same story as the first comment. Had missed call with no voicemail, called back and number is not working!

Missed the call. Did not leave a message. When I called back it was a call centre in Terry Hills/NSW. Recommend block.

Try to sell something I hung up

I called back number (02) 8417 8332 rang 5 times then goes to busy tone.