I called back the number (02) 4038 9099 and reached vm that said I reached Social Research Centre

Caller: Jerk

Some useless wanker calling with background noise,sounds like a Boiler Room bunch of scammers

Spam, got a message from computerised voice called "Trevor"

call centre, trying to collect personal data, pretending to be doing survey

No Message - that's what voice mails & answering machines are for; filtering out unwanted calls from unknown numbers!
You are never obligated to answer your phone just because it's ringing!

Caller: Social Search Cintel

Broke told me Social Search Cintel, when everyone one knows it’s: Social Research Centre!

I tried to mislead us about his call...
Clamming health services etc.

I literally told him to bugger off and hang up.

none left

This number left a computer generated voice message from "Trevor" from the Sorical Research Centre. Seems spammy (harvesting personal info?) but didn't have any agenda. Said they'd call again in a couple of days.