Found these idiots while trying to log onto Amazon. Have at them:
1-888-448-1549
If they ask you what the popup says, this is what it said:
WARNING: Your PC has been hacked!
Don't close this window or else hackers may have access to:
-Facebook Login
-Credit Card details
-Email Account Login
-Photos Stored On This Computer
You must contact us immediately so that our engineers can walk you through the removal process over the phone. Please call us within the next 5 minutes to prevent your computer from being disabled.
Call: (Phone number)