PC Care 247 deceptive, inducing fear, threating doom, destruction, urgency, railroading, rapid speech, no time to think India

I was trying to install McAfee on my computer and couldn't use my password, so I first emailed them, then called them with a number I got from Google.

A man came on and said my problem was so severe it had to go to a special division of McAfee, "Level 3 Technicians".  He added that it was so bad, Office Depot or the Geek Squad couldn't fix it.  Not even buying a new computer would fix it, BUT he could fix it.  He ran screens on my computer showing that I had 80 programs running even as we spoke.  He showed me lists that "proved" 4 foreign countries and 7 states had people using my signal as we spoke.  

He talked so fast, I couldn't think.  He said I could take out this special protection for 2 years for $400.00 or 5 years for $500.  I think I was in panic mode and I was rapidly calculating other options.
He was very insistent and really scared me and convinced me of all sorts of impending dangers.

Because I had called the McAfee number I had gotten from Google, I thought I was dealing with a reputable company, so, dumb me, I said OK. 

Now our computer is unusable and we have spent HOURS of 4 of the last 5 days sitting in front of it talking to India.  I am physically sick.

I am praying that my credit card can help me with this scam.  As a retired school teacher, I cannot afford a mistake like this.  Caveat Emptor.