I called (03) 8393 0709 back and got automated system saying that the person in extension 709 is unavailable and that i can leave a message. It didnt mention the company name.

I live in Sydney so it is unusual to receive five missed calls over 2 days from number (03) 8393 0733 before receiving call from this number (03) 8393 0709. It turned out the call was from telemarketing company chasing lost super. Call themselves "Super Search". They got my number through a lead list from a "You've won a prize tell use where to send it" scam. I've had hundreds of calls and emails as result of this scam. "Super Search" sent me form to authorize them to search for lost superannuation via email address "echosign @ echosign.com". Super Search could be genuine company, I just don't like where the get their leads from. Pretty sure telemarketing company has control of the whole 100 number range (03) 8393 0700 - (03) 8393 0799.