I regularly get the Microsoft calls, and I just tell them to stop lying to me and hang up, but last year I got one purportedly from BT claiming my computer had a virus and was infecting other computers, and unless I did what they told me my broadband would be cut off.
I was busy and hung up, but I got a garbled phone message from the same person the next day, and the bloke called the day after that, so I decided to string him along and opened up a screen on my computer.
He told me to press the Windows key, and was clearly flummoxed by my telling him I had no such key, and his script wasn’t helping him much when I relented and said I used a Mac!
He then told me to open up a browser page and type in a web address, which I did, then I said, “oh, that’s interesting, there’s a little yellow triangle popped up with an exclamation mark in it. I’ve just clicked on it, and it told me not to proceed because it’s an insecure web address!”
The line suddenly went dead! How very strange… 😉