I use to get this type of calls with 07 area code, now i get them from 03 area code. Apparently overseas scammers have worked out how to set up a network of numbers in your country and call people from God knows where through local numbers. So far each local number is used only once to avoid detection. Every time i called back the message was, ''the number is disconnected''. Next time they call the number is different.

I get regular calls from numbers ranging from (03) 9912 4800 - (03) 9912 4808. They keep trying from different numbers within this range. The first time I answered, they didn't respond after 3 hellos, so I just hung up. They keep trying with the other number variations. No message is ever left. I just keep blocking each one after they ring.

They have never cancelled any of my assignments.  They usually phone people when they have premium payment assignments.

Yes, it's Gapbuster. They are a mystery shopping company. I think they are based in Australia but have work internationally.Watch out for them. They cancel assignments AFTER you have done them and so don't pay you - either for the job or for the expenses/purchases.  Tread with caution if you go anywhere near these guys.

GAPbuster.

Got 4 calls in quick succession, none of which I answered.  Who are they?