I was threatened with a lawsuit fro the ATO for tax evasion or something. Told me that if I don't call back I will be arrested for tax evasion. Tried calling back and nobody picked up.

SCAM DO NOT CALL THIS NUMBER BACK
Received some automated message saying I am being sued by the ATO

Called back a few times and it hung up. Last time I called back they answered, muffled Asian voice saying something about the ATO wanting my name, I refused and I asked if they were from the ATO and they hung up.
My someone attempted to hack my email during all of this. Might be related.
Don’t answer or call back.

Caller: Voice message

I’ll be arrested as lawsuit against me.

Got a voice message.. saying if I don’t call them back, a arrest warrant will be issued...

Caller: Robotic message

Lawsuit being filed against me if I don’t call a number.. haha doesn’t say by whom or who they are.. scam

oh wow lucky you, I had 45mins.

Automated message saying from Taxation Office - hung up straight away

recorded message - warrant for arrest if you dont call back - (08) 9467 6339

Same message, got Chinese call centre

Automated robotic message from taxation department saying someone has filed a lawsuit against me and I should call a certain number.

Same. Recorded message saying I would be arrested if I didn’t call them back. Not likely.

Threatening law suit

Do not answer any calls from this number. Especially, do not phone the number back if you have a missed call.

I'm being arrested in one hour for tax evasion.

Automated message saying from Taxation Office and a law suit has been lodged against me - please call this number, otherwise an arrest warrant will be issued under your name.