Just answered a call from the above number.
Caller stated my email address has won a $500.00 solar voucher.
I asked him to send me an email confirming the win.
He hung up!

I called back number (03) 9982 1809 reached voice mail but did not say for what company.

I missed their call, didn't try to call back after i saw the comment above, also they never left a voicemail and that's enough to prove they aren't professionals

Phishing for tax details. Block This number SCAm