Didn't answer the call they left a nice text message to say "lien for fraudulent and suspicious activity. Paperworks sent to registered address also returned back unsigned and undelivered".

DEFINITELY A SCAM! Voicemail left saying that someone has used my tax file number and if I don't respond I will be arrested. DO NOT CALL BACK

Received the same phone call. I'm calling BS on this one. I hung up after 10 seconds. If the ATO needs me they can write to me.

Said they were from the ATO asking for my TFN and said I'd get arrested if I didn't call back with it. Scam

I called back number (02) 8005 0876 rang once then gets disconnected automatically.