Had a missed call from this number that went to voicemail. When I checked the messages later, it was a recorded message claiming some issue with my TFN and that a warrant for my arrest will be issued in the next x amount of minutes... And something about whether I want to talk to someone about it or something which was around the time the message cut out, so don't know what it said after that.
An obvious scam... But this is the second call like this I've had in the past two days, yesterday from an 08 number.