Bad Mic, only said "hello" nothing else. It's probably a scam

Caller: immigration the robot said

I received call 4:14pm saying, we from immigration have been trying to get hold of you for awhile now please choose language between English or Chinese? It was a robot call, i hung up straight away and BLOCKED THE NUMBER 07(21467419) scam

Caller: Said Steve from telstra

Told me there was problems with my internet, I asked what and he hung up. I'm not with telstra. Beware, it's a scam

Caller: Peter

Picked it up, choosing either option 1 for english or 2 for chinese will land you on the same line with a guy who calls himself Peter on the other end. Something about how I have to go to some NSW immigration office to collect documents, didn't really make sense. Obviously a scam because 1. I was born here and 2. someone under 18 should not need to go to some office to grab documents. Blocked the number.

Robot call. Something about health insurance and emergency. Didn’t hear properly straight away hung up

No idea

Final Notice auto-call (Translated from Chinese)