I called back number (02) 9137 2382 reached voice mail but did not say for what company.

Returned the call of (02) 9137 2382. It just says "All operators are busy right now. We'll return your call shortly". Did not mention the company name, sounds like Telemarketers.

I called back and it went straight to voicemail with a bad recording of a male with an Australian accent asking me to hold but I was then automatically disconnected.