“I had a client call me last week about this. He’d had two calls in one day, saying he would be arrested,” says the founder of Healthy Business Finances, Stacey Price.

“He did ring them back. He thought it was a scam, but then also thought if it really was the ATO he should call back. I know, though, there are others out there [getting caught out] who don’t then ring to tell me.”

https://www.smh.com.au/business/small-business/it-s-not-us-ato-s-fresh-warning-as-scam-losses-hit-830-000-20181203-p50jsj.html