I dont know who it is but they have called 3 times today and hang up when i answer. Not happy!

Called me three times today and when I picked up they hung up.

This number is NOT Telstra.  It's a scam, whereby a premium service provider calls, then hangs up, baiting the user to call back and pay for premium charges.  Legally, there's a loophole - they arent breaking any laws by calling and hanging up.  

It is NOT Telstra making these calls.

I had my first call from this number. I did not answer.
In the last week I have given my mobile number to Telstra as they are putting a landline in for me.
If this is a survey and from Telstra, they are rude people. I really hate the intrusions in life brought on in the last 2 decades by the new career of marketing your guts out.

This number is NOT Telstra.  It's a scam, whereby a premium service provider calls, then hangs up, baiting the user to call back and pay for premium charges.  Legally, there's a loophole - they arent breaking any laws by calling and hanging up.  It is NOT Telstra making these calls.

Yes just had a missed call from this number and googled the number, found this. Bloody Telstra. This should be illegal. I'm pretty sure it probably is. Total invasion of privacy.