same here. that number has been calling me too. doesn't leave a message.

This number may go to a call centre for BOSTON ONE financial advisers, http://www.bostonone.com/?page_id=3  of 10 SHORT STREET, SOUTHPORT, QLD, 4125

I get about 5 phone calls a day from the same people with different numbers...and its only started happening since i switched over to optus post paid. Never happened pre-paid. I have about 19 numbers on a blocked list.
Once they claimed they were a taxi service and his friend had called me about 8 times in 5 minutes...he was sorry.
Simple thing to do, dont answer a number you dont know. Add it to your block list stat.
Its annoying, but at least you know they only have your phone number, and hopefully nothing else.

I also recieved like 6 calls from this number today. I was able to answer the third call, but nobody answered. Then I answered again the 6th call and a very rude guy started to tell me that we were in Australia and that we speak English here. The thing is that I'm in Perth and am internationa. Then he started to tell me something about a workshop, but he was speaking very fast. Finally he hanged up very rudely... as he was unable to get anything from me. Just be careful with this number. It is better is you do not give them any personal information. My cell is optus, and my housemate's cel is also from optus and he received the same call from the same number the same day (23-2-2010). But he was unable to hear anything from the other side of the phone...It is just a waist of time... don't even bother to answer... certainly it is a kind of "scamming"... Not sure, but possible.

I also just received a call from this number.  When i went to return the call i got a call failed response i have tried twice!

does anybody know who this is?

(07) 5630 9200they called again, this time on my landline... wtf, who is this?(in response to above post)