My and some friends were ring them up last night, we managed to shut them down and then they got another telephone. There website has also changed name and asks for details of McAfee subscription. Just put fake details and press submit. And these guys are horrible. I had a voice changer I would sound 8 and yet they were tryna get card and subscription information even after saying go to bed.
Error code will pop up and quote it to them, Enjoy:)
Number (Toll Free) 18448901999
http://www.theagencysumo.com/mcafee-us/mcafee.html