I had a phone scammer ring the other day.
They said they were from the "Federal Dept of Government Finances"
Apparently I am owed $5250 because of extra Govt charges when I use my credit card.
I'm claiming a new personal best, I was able to keep them on the phone for 27 minutes before they twigged to me, abused me for wasting their time and hung up.
I love it.