Scam??

I get these calls occasionally. If I'm not busy I sometimes play along and act like I'm really confused and naive. I do not actually follow their steps as they want remote access. I keep a whistle on my desk and if I am busy I occasionally just blow it in their ear. Last time they called the minute they said my computer was infected I acted like I was freaked out and told them to hang and yelled out for my wife to unplug the computer because it was being infected (this was all done loudly just for their benefit). I then got back on the phone and told them we unplugged it. They told me to turn it back on so I pretended to. I waited an appropriate amount of time and then told them in a panic that they must be right because the screen had a message on it that shouldn't and asked if they want me to tell them what it said. Of course they did so I told it had letters coming up and I would read them to them one at a time F U _ _ Y O U well you get it. Really pissed them off and they hung up. Called me back a few minutes later and tried to cuss me out. Haven't heard back from them since.