Several missed calls from this number including during weekends/after hours - voicemail messages were not been left. I called back in the evening and got a voicemail that did not provide company/individuals name. Called back during office hours and was told that they were contacting me as I had requested a property report which I had not.

I called back the number (02) 9539 5899 and the guy on the other line said I reached OpenAgent

Caller: open agent real estate

i received a phone call, it rang three rings...then hung up. I rang back and spoke to (sounded like) pimply faced kid.
I did NOT sign up for any unsolicitored phone calls

Caller: Open Agent Australia

When you leave your details on realestate.com.au, they will follow you up.

I called back number (02) 9539 5899 reached IVR for a company called Open Agent.

Hang up, no message left