This company lure their victims by presenting a false error screen in your browser and asking you to call an 0800 number to get support. They then seek access (with your permission) to your computer and then ask for money to clear the problem. While what they do might not be illegal their methods in obtaining you as a client are nefarious and downright wrong. Close all your browser windows using CTRL-ALT-DEL and run something like MalwareBytes to rid yourself of all Adware and Malware.