I rarely get calls on my home phone but "Microsoft" scammers have tried calling me twice this week.
Instead of just dismissing them this time, I played along for a little while.
The heavily accented operator tried to tell me that Windows computer had been hacked and was involved in hacking activity. I asked him which one and told him I have 7 Windows computers (actually accurate, although I rarely use half of them). He got a bit confused at this point and thought I meant Windows 7 was on my Windows computer. After I explained that no, I actually meant I have 7 computers with Windows on them and could he tell me which one had been hacked he put me on hold and got his "supervisor".
The (also heavily accented) "supervisor" then wanted to know if I really had 7 computers and were they for business or personal use. I asked him why that was relevant and pointed out that the first operator had said they were from Microsoft and asked why they would be calling me.
was the response. He then tried to tell me that they I told him no, they are all for personal use. He then tried to tell me I asked him what he was talking about because all of my computers have valid licences. He seemed to think I meant some other sort of licence at this point. Finally I got sick of playing along and told him I work in IT and deal with volume licences at work and all my computers at home have valid licences. I told him that the first operator had said my computers were involved in hacking and now he was trying to tell me that my licences were invalid when they weren't.
At this point I told him this was ridiculous, asked him where he was really from and he hung up.
tl;dr version - Fred 1, Phone Scammers 0