Since i am unlisted i would like to know who is calling?
It was voice mail i went and hit the wrong button and my phone dialed
this number and i am worried if i will be paying for unwanted calls.

same here I answered no one spoke, they just hung up.  Has happened more than three times

I just also got a call - when I called back it was Telstra Voicemail as someone above said

I just got the call then! and they hung up, searched on google and found this thread. I wont be asnwering it any more, seems strange hey. Speaking of which, have any of you guys gotten calls from people trying to sell you investment software??? what if were on a scamming list?

I got this call too,(sometimes they ring 7 times in a hour). Normally they just hang up. But this time I heard music and a guy saying "whats ups brother"???????

Yeah I've had the same, plus calls from (03) 9033 4560 and others - i must be on a list of some type.