Obviously fake... (Overseas)
Just had a phonecall, supposedly from the Tax office {At 2.17 am???}
Claiming that I owe "$3,292" from last years tax?
I replied "Is that for just last year, or for the past ten years that I have not paid any income tax?"
He warmed to this, and started quoting random figures for each year,
at which I said "Sorry, " (misquoting the time to further confuse him, time quoted may suit Anchorage, Alaska.)
"Can you ring me later in the day, as it is only 8.15 am, and I have just finished working all night, and need some sleep!"
He got flustered and threatened me with arrest by the FBI as I hung up.