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

Have been receiving a "missed-call" from this number for the past 1 week and it is non-stop, with calls going to 2 or 3 times daily!!  As the calls have been unanswered by me,use your head and TAKE THE HINT that I'm not interested.

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.

Got a call from them on a mobile number that was mine about 10 years ago, and has been since changed to my wifes name.  They still ask for me however, so this stinks of a hacked old database and a scam.

I blocked a number from an (03) tele-marketing service and now this is calling repeatedly. At least twice a day for the last week. I'm igniring it.

I'm guessing it's Optus