Proxy gave me ads! How do you get rid of them

[Kamelot]

I just opened internet and saw t hat there are pop ups and random ads on almost every page I go to. I believe it is from one of the proxies I used yesterday. Ugh. How do I get rid of these? Im using Windows

[MS-DOS]

Did you use Hola unblocker? Hola is a piece of crap.