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.

Got a call four time in last three days but when take that call no one answer ..and when dial that no it's busy.....

Received 3 calls from this number today!!! No messages left!!! Annoyed.com

I'm guessing it's Optus

Thanks for that.  I certainly wont be ringing them back that is for sure!!

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

I just answered a call from this number (02) 8956 0300....offering me free $30 credit because my sim is about to 'expire'....all they wanted was my date of birth - I didn't give it to them of course, so I got nothing but rudeness and an abrupt reminder to recharge my account. I believe it is a scam...anyway I REFUSE to ever give out info over the phone..even for $30 free credit.