Get a number of these calls from Victorian number. I answered the call but don’t say anything and the caller hangs up. Seemingly a spam call as nobody I know in Victoria uses a landline.

Spam

Hang up when answered

Hotwater system

Hanged up when answered.

I didn't answer their call, rang them back twice on work landline - they were "unavailable". Assume spam.

Caller: (03) 7031 7150

Hot Water System Spammer

They just keep ringing me on different numbers all hours of the night

Hang up dialler

back to back calls from number

SPAM

scammers go home you wankers

Called NO ANSWERS

Pests! Now blocked them.

I didn’t answer the call. They didn’t leave a message.

Caller: I don't know

A male voice said Hello and when I said our business name he hung up.