I received a call from this number. it is the standard Microsoft scam but using Telstra as the base (being the biggest telco). if you play along (don't actually do what they tell you) and when they want to remote in to fix the error. tell them the IP address is 127.0.0.1 (local loopback) they should hang up or you could attempt to Tom Mabe them (look at youtube and you"ll know what I mean).