I'm getting that missed calls from that number too for the past almost a month now it kept calling my mobile and I call back and its busy and i'm starting to get angry and I did registered Do Not Call from Australian Government site...and now its starting to get my nerve to tell them stop calling me!

I have been getting calls from these clowns every half hour without fail, glad i found this site.
I'll just continue to ignore them.

i work for tsa it pretty stupid you goig on about that on here i should tell the company that they are hiring people that dont appreciete working for them if you dont want to work there quit and let someone else work there

its a pain in the you know what how can we stop this

Anyone out there considered that the number calling you may be a PC number, like those allocated to some VoIP sites, Skype for example? This may in part explain why it is always busy when you call it back, or it has a lot of static on the line.  (The number (08) 9424 4700 looks like a WA number).  But TSA, licensed by TELSRA, is certainly making some dubious calls to get people to sign up to very suspect mobile phone packages.  Caveat Emptor.

Got the number today at 10.10am, i didn't know exactly where it was from but i knew it was Perth or South Australia, which is area code 08, but I didn't bother answering there call.Victoria/Tasmania area codes(03)New South Wales area codes (02)Queenland area codes (07)Western Australia area codes (08)South Australia (08)

I have had 2 calls today from this number - try to ring back but always engaged. Started to annoy me - who can we report this to?

I've received numerous calls from these people too. tsa telco group. pure evil, purely rude if they are calling your mobile you ring 1800 081 661 and ask for them to take ur number off their list. if they ring your home phone ring 1800 634 055. expect to be treated rudely.
if you are on the do not call register then ring up and report them, they can get a million dollar fine...and the more of them they get the more bankrupt they will become..YAY.