I tried to answer , but it stopped after just a few rings , they rang twice today , I phoned back but got a recorded msg saying ‘ Optus advises that the number you have filled has been disconnected .
So I simply blocked it . FYI , To do this simply tap on the (i ) its on the top RHS then scroll down the options listed and tap on - BLOCK THIS CALLER ‘

Has called twice in an hour, blocking number.

I tried to answer , but it stopped after just a few rings, really annoying.
BLOCK THIS CALLER!

Caller: Some kinda energy call scam

Just block it

Pain in the arse.
Don’t answer
Foreign male voice
Harassing and nuisance caller should read up on Federal offence/s for telecommunications
f*ck off

no message=blocked number

My phone rang I said Hello , .... (name) speaking. Then silence. Than automated voice said "Goodbye"

I called back the number (03) 9008 4253 but the call didn't go through

Caller: Two calls from this number

Hangs up when I answer. When I try to phone back I get the message 'Optus advises that this number is disconnected'