i get these phony microsoft calls all the time.  Since time is valuable I decided that the best way to hurt them is to waste THEIR time.  so i play with them by acting computer illiterate and unable to follow their instructions - I also tell them I'm hard-of-hearing and making them repeat everything a few times - then asking them to hold while i go the the bathroom - also asking if they can fix my tv remotely - and if they know my friend Joe Zebbitch who works at microsoft.  I keep interupting them and change the subject.  They are relentless trying to get remote control over my computer - Eventually i say mabe its not working because my computer is a MAC - at which point I'm called a couple of 4 letter words and they hang up.  I guess i have too much free time on my hands. but i get a good belly laugh from it all -  I'm retired and loving it.  They can call me as often as they want.