Dunk Master Bug

Darius is my favorite champion so I bought the Dunk Master skin obviously! But now when I play Dunk Master Darius, as the game goes on he rapidly becomes more and more bugged to the point where I can no longer click a target at all. Meaning I often wind up getting stuck auto attacking a minion while an enemy champion kicks my butt. I've tried everything to fix it, from tabbing out to relaunching League. I don't necessarily need a refund but I would really appreciate one if he cannot be fixed because at this time I cannot play with this skin at all. Thanks