Prime Important Claims to be with Microsoft; offer to fix computer security; installed virus instead Nationwide

Man with India accent called stating he was from Microsoft informing me that my computer's security may not be secure or up todate.  He would fix my computer, clean it up and get it running well.  He asked me to type in an address in the computer header so he could take over my computer to work on it.  

Oh, Oh.  Fell for this a couple of years ago and my computer never worked so badly after that. It worked okay for a while, but it slowly got worse and worse with lots of pop-up that interferred with everything I was doing.  I even checked my setting to make sure my pop-up blocker was on and configured properly, but to no avail.  I got tired of it and after awhile, it was so bad, I finally investigated online for ways to fix my computer myself.  Months later I finally got it done w/o calling the "support" number of Prime Importnt to repair it for a price.

I initially paid the fee they requested ..about $350 or $360.  Because they told me that if I did not, I could lose all the info. stored on my computer...all my document and pictures.  They said that I if I just took my computer to a repair store before they finished with my computer, there was no guarantee the repair shop could recover my data. They of course they did not offer this info. until they had already been in my computer diagnoising it for problems and a "fix." No clue if they put a virus in it for them to "fix" later. Not only  this, but they were condesending and treated me like I was an idiot..especially the gal that took my payment information.

When they called again this time, I was already wised up.  Burn me once, shame on you;  burn me twice, shame on me.

They were very persistant. On the initial call I picked up this time, we talked and when he wanted to take over my computer, I said "NO," and hung up.  He immediately called back several times trying to give me the hard sell.  Finally I told him that I had called ID and would not pick up the phone and he would be wasting his time.  He continued to call back daily for about a week from March 28th to April 6th, 2015.  Not Sure if he is done calling.

Not only was he very insistant, but so much so to the point of being rude talking to me in a very condesending voice and attitude.