I received a call from this number. The guy had a very strong indian accent claimed that he was from Startel Communications and advised me that my contract with Optus is ending soon. Mind you I don't have a contract with Optus to start off with, so I knew this was a scam. I swore at him and then hung up.The next few days this number called me again and I didn't bother picking up.Looks like I'm gonna report them to the ACMAThis is ridiculoud, where do they get the mobile numbers from????

you could call (02) 9037 0138 to give your views to them directly. (while that no lasts)
it appears to be a nuisance call outfit blatantly breaching the telemarketing consumer protection laws. had about 8 calls.
they said they were green communications and my contract was to expire.
i recently did a new optus contract - somehow got those exact new details from optus which is a concern for optus in terms of consumer privacy
the person gave 2 different names in teh call (paul robinson & james thompson despite having a very thick indian accent.
all other requests as to who are they are met with evasion.
green communictions went into liquidation. it perhaps is related to go talk.
when you call their brisbane hq number they refuse to identify their business or offer or that green communications is part of their business despite it saying this on their web site.

This number has called four times now, I have answered once.  I asked them 'which company are you from' clearly as soon as I got a chance.  I hung up when they answered with a very non-specific 'telephone provider'.  

The accent was so thick I didn't understand most of what they said.  

I'm with Optus, but have already told them to (hopefully) never call or text me.

Same thing happend to me.... the person called me and told me that my contract is expireing soon, but I don't have contract at all! When I ask the person questions, he just hang up!!! Very annoying!

received 2 calls tied up my mobile with music message

They also called me today. I kept asking who he was, what company he was from, all he told me was he is from a 'telephone company' and 'Optus reseller'.Told him that he doesn't know what he's talking about, I still have a whole year on my contract. He said thanks and hung up.Don't give them any info; they ask how much you spend a month, etc.