Caller: "Telstra technical department"

Tells me my internet connection is being used without my permission. Typical indian call centre scam to gain remote access to computer.
Argumentative mongrel. I asked them for address of building (241 Exhibition St Melb, after a bit of searching) asked for details of public transport outside - refused to answer, told me I should phone telstra and he'd call me back in 10 mins.
Hung up when I insisted on employee ID and full name and phone number. definite scam