Caller: Scammer

I answered the call from this number. Call was apparently from Buffolo, Victoria. When I answered, they hung up.
I called back but the number was unavailable due to “temporary service difficulties”. The number has been phished.

Call went to voice mail when recording started they hung-up

Recorded message. Didn't wait to hear what it was about. Blocked.

Caller: Claimed to be NBN - ha ha

The long wait until she answered with a heavy accent indicated the call distribution system of a call centre.
I asked if I had a NBN problem with a sceptical voice and she hung up. How rude!
Luckily, my router (Fritz) allows be to block 1, 10, 100 or 1000 numbers at a time, so she won't get through a second time.

Called but did not leave a message. iPhone said location was Ballarat, Victoria.