Had 12 calls plus over last 2 days if you could block it, probably worth while.
Ends soon after being answered, nobody on the other end.

Wanting to replace our hot water system for free - yeah right

I also received a missed call from this number

just calls and hangs up, clearly a computer generated nuisance call

Called our office number and they hung up when i picked up the phone.

scammer

Phone flagged as spam but there was a voicemail left. When I listened, it was clearly someone snoring. Weird.

ROBO Call

Called our office number and hang up after I picked up the phone.

Definitely scammers. Rang once, then hung up on me. They rang back half an hour later to sell me rubbish.

Scam ! sale rebate hot water system

Did not answer

Caller: Telstra i would guess

No message and hung up after i told them they had no audio but I'm guessing since its an ongoing problem with our internet and home phone, that the lack of audio on their part was either intentional of just to show that they tried to make contact for when they have to answer to the ombudsman. I keep good records and this ones on the list.