I called this number back. Someone picked up on the first ring. Their response was Australia Taxation Office. How can I help you. I know for a fact ATO will usually send you a letter in the mail rather than call you out of the blue.

Robocall claiming they were ATO and I needed to file documents otherwise I'd be arrested. At this point I hung up. Since 7145 has been used for a while for NBN scams, could the provide please deactivate this block of numbers used for fraud?

Scammers from the ATO