I ahve been getting calls from this number.  Disconnects when I call back.  Nobody there when I answer.  When I call back from a land based service, engaged.I'm going to block the number.

Me too.

this F&^*cking annoying number called me just then today. it is really annoying because i am currently in class. how can i block it?

I've had 14 calls from this person in the last 2 weeks.  Every time I call back I just get hung up on I've tried like every single search thingo but i cant get a name or address or anything

I just had a conversation a guy from this number. He works for TSA Telco (http://www.tsagroup.com.au/) as an authourised Telstra dealer. He advised that my contract was due for renewal and if I was happy to keep the same plan. Gave me a $7.50 discount per month for renewing. Bit dodgey, as he asked to confirm my driver's license number and nothing else and to make a recording of my voice.

It is a company working on behalf of Telstra. When you contact is just about outThey offer you a new contact with Telstra.