Caller: came up as Yes Optus

Computer saying my service was going to be disconected.
SCAM

Caller: Not Sure

Mandarin caller, saying my service was to be disconnected, this is a scam, they will pretend to be a mobile carrier and then ask you for details

Automated voice caller saying it’s a call from immigration department. Chinese accent voice .

Random message in I assume Mandarin. Has called numerous times. Number blocked.

I didn't answer but a voice message was left. It was pre-recorded audio saying "your mobile phone has not normal usage. On the service will be stopped today. For English please press 1, for Chinese service please press 2".

Caller: don’t know

Missed a call from this number. Called back number to see what was about…only to find robobot voice at other end of the call saying…”you are currently next inline, thank you for patience (10…09…08…07…06…04…01)”, caller doesn’t answer just disconnects instead, WTF, rude. Probably botdial-canvassing mobile numbers of public, high-plausibility that this number is some sort of deviant scam. Block this number.

voicemail left for me in mandarin from this number

I’m a bit rusty but I believe they were threatening me?