I called back number (02) 8830 7328 reached voice mail of a guy for a company called Careers Australia.

I called back number (02) 8830 7328 spoke to a guy who said company name is Careers Australia.

Telemarketer or Survey for Careers Australia.
Have called 3-4 x a week for last month. Finally left a voicemail today asking me to call them back. They knew my name so have extracted my data from somewhere as I have never even heard of Careers Australia let alone gone to their website or signed up for any kind of info call-back as I'm not changing careers nor looking for a job.
Block or avoid if you can