Yet Again Another Windows Tech Support Scam.
https://d1lzc0n7qu93kx.cloudfront.net/
1-888-724-3021
[“Windows Tech Scammer.”,“Windows Tech Scammer 5/20/18”]
Here, I talked with them, its funny how they just ask you for your credit card number and then when your done giving it to them they hang up. hehe 
https://phone.firertc.com/calls/5b01af737475634f7b9a0200/recording