Answered a call on 6th March, 2018 - no one on the line.
Called again today (8th March) This time a guy with a “put on” accent said he was from Telstra and he was calling about “the” internet connection. When I told him I didn’t have an internet connection he hung up. A bone fide Telstra employee would have at least apologised before hanging up. Beware the man with the put on (badly) American / European accent.