recorded message said tax file number had been cancelled and an arrest warrant issued, said press 1 for details then nothing

Getting lots of dodgy calls lately, so I don't answer my phone when I didn't recognise the number. The number calling showed it was from Orange (02) 6369 2782. Just as well I didn't answer as it sounds like it would have been the tax file cancellation / arrest message. Seriously, don't these people ever give up??