There's a well-known phone scam based on this (fake HSA call), and I got it about two weeks ago when I happened to be home/took some PTO from work. I don't recall why I was in a bad mood, but I immediately told the guy to "f*** off" and hung-up on him.
(Edit: Then I blocked the number in my phone.)
My wife heard all of this, and asked who I was talking to.
Me: "Homeland Security."
She: "You told them to "f-off"?"
And then I got The Look....
Took me a few minutes to calm her down and explain what was going on.
