I got one at my Uncles place. He only has Macs and they claimed to be from Microsoft so quite quickly I knew it was a scam. They claimed his Windows computers

I got one at my Uncles place. He only has Macs and they claimed to be from Microsoft so quite quickly I knew it was a scam. They claimed his Windows computers were sending bad packets onto the Internet. I played along and asked how they were able to see all my bad packets. They claimed that Microsoft gave them direct access to the central Internet router so they could clean up the Internet. After a bit of this (they wanted me to install a program) I got bored, yelled at them and they hung up on me.