I called back number (03) 5321 0012 rang once then gets disconnected automatically.

03 area number , probably central / western Victoria , I didn't recognise the number so let it go to the answer machine , They didn't leave a message .

Caller: Indian guy

Scam about disconnecting my Telstra internet - I don't have Telstra

Has called 4 times over the past two days. No message left. Have now blocked number.

Caller: Unknown - hung up before could answer 16/03/2019

Same number as one other person who tried to call it back yesterday (15/03/2019

I didn't recognise the number so let it go to the answer machine , They didn't leave a message .

(03) 5321 0012 called 2 times late a/noon Fri 15Mar19. NB. called the # - got msg "Optus advises the number is disconnected" !!

Scammers

Rang the number and got a message this number could not be connected. Block the number

Caller: Scammer

Indian woman claiming to be from Telstra technical dept. I am sick of these creeps.

The old 'calling from telstra' scam...

Returned the call. Number disconnected.