masteries are glitched

Hey, my masteries pages aren't wanting to change in game, in champion select I will choose let's say ability power, then when I get into the game it acts like my attack damage page is on 24/7 no matter what I choose, I even deleted every single masteries page with attack damage on it and I still get attack damage bonuses. Can someone please help? Riot support said they can't do anything about it.