Caller: Claiming to be Telstra

SCAM CALLERS, or should I say SCUM -
Caller ID is Victoria 03 with an Indian accent, claiming he was calling from Telstra and that I had a serious infection on my computer :-0.
I asked for a call back phone and his name.
Caller claimed his name was Tom Russell :-) and that he was Australian and was calling from Sydney and to call back 02 800 35 157
He asked me to get onto my computer etc I told him, I would call my computer technician and I hung up on him.
Out of curiosity afterwards - I called both phone numbers, surprise ! neither phone numbers work.
03 phone number is disconnected and the 02 phone number cuts out.

I hope they rot!!