Caller: ATO Robocall Scammer

Pre-recorded message claiming to be the ATO regarding a tax voilation threatening jail. Asked to stay on the line to be put through to fix up the issue, however I hung up as I suspected it was a scam. Reported it online via the ATO website.
Info from the ATO website:
pre-recorded messages (robocalls)
We are aware of scammers sending pre-recorded messages (that is, robocalls) in record numbers. They are manipulating caller identification so that your phone displays an Australian phone number, including legitimate ATO numbers despite the call coming from overseas. This is known as spoofing.

These pre-recorded calls follow the common approach of scammers threatening immediate arrest for an unpaid tax debt, attempting to keep you on the line until payment is made and requesting payment in unusual methods such as iTunes, Google Play or other prepaid cards or by cryptocurrency.