Cant get rid of arabic on Facebook

I originally had English (US) and now I can't get rid of Arabic that will not disappear. It now says English(US) with arabic letters attached to it. They will not go away-arabic on everything!!! Also Facebook Game Room program shows installed yesterday and I did not install it. When I go to Control Panel it will not delete because Installation File not found. Where did this come from and how can I get back to normal English without Game Room on my Facebook.