Le site top10antivirussoftware.com est-il sûr ?

Clicked on a link to buy Webroot for incredibly low price not realizing I was actually clicking on a scam that is very organized! After they initially got my money, I was unable to download the software. Called the number given and they told me they would need to get into my computer to see why it wasn't downloading then told me I had a virus and that I had to give them $99 to fix it. When I said I'd have my own IT person fix it they said that my IT guy couldn't "cleanse my network" only my computer and that the problem would continue to happen. I hung up but the charge had already been made to my credit card but I called immediately and reported them.