Received a call from 'them' last night. Left some garbled incomprehensible message on my voicemail. They tried again but from a different number (02) 8956 7000.

tell them to stop call and when I answer they are not there.

I recieved their call 50 min ago

I'm guessing it's Optus

If I want to buy something I will call you!  Stop calling me!!

They tried to call me 30min ago, didn't hear so didn't answer. No message left. If they call I'll answer then interrogate them, maybe ask for their ABN etc

Just got a call from this number. I asked how they could verify that they were from optus, and they said it would breach confidentiality, and that I should check with Optus Customer Service. I hung up at that point, and did just so, Optus was unable to find the number on their database, they had no record of my being called by an optus service (should be recorded every time optus calls someone), and felt strongly that this is indeed a marketing group.

I received a number of calls from this number, each time no message was left.  When I tried to return the call the number came up as disconnected.  I checked out the umber on the Internet and discovered it was a scam.  When hey called back next they asked for me by name and I said that it was not that persons phone.  They've not called back.  Scammers