They left message which read do to fraudulent action they were going to file lawsuit

dodgy English second language accent

when i rang it rang once and hung up

Thank goudness for this site . Now i know it is bogus

I called back number (08) 6102 0116 rang once then gets disconnected automatically.

Caller: Scammers pretending to be ATO

Pre recorded message saying that legal action against the family had been commenced.

Rod and the investigation team of our department is investigating you and your family. We have tried to notify you regarding this issue but we have never got.