I rang back the number (03) 9117 4601 and was routed to Social Research Centre

With all the scammers doing the rounds lately, not trusting no one. If genuine or important why not leave a message. No message, number gets blocked.

Didn't recognise number, so didn't answer

No message left, blocked number.

Why are they ringing on Sunday at lunchtime? No message, blocked

Caller: Scammer

Some sort of scam claiming 'survey' or 'research' but asking for personal information. Blocked.

Got a call from this number at 7:30 pm, probably scam that gave a call at late evening.

didn't leave a message - blocked

They said they are from immigration for survey

Called at 8.30 at night. I didn't answer and no message left. Other comments on this thread say they're calling regarding Victorian Health. I'm in NSW. I've never been to Vic.

Caller: The social research centre

Calling me about Victorian Health Survey for DHHS. I googles their number before picking up https://www.srcentre.com.au/research-participants#projects - turns out they're legit, spoke to really nice professional young lady. Happy to help genuine research.

Caller: Somebody for cancer research

trying to get money out of me any way how, kept on talking over me so i just hung up.