Desktop beta app will not uninstall

I just tried all of that but none of it solved my problem, now I don't any EA Desktop file in my computer and registry, but for some reason when I try to reinstalled it still say it's already installed, before it said it wouldn't find the app on the right file, but now when I try to go the app it just takes me to my desktop. Now I have this "cancer" in my computer that I can't get rid of, I can't play my games and I just wasted my money in this trash company which can't even make a decent piece of software.