[CLIENT] 12 of the same rune

I seem to have acquired 12 Greater marks of Crit Chance through a bug. I went to the rune store, already owning 6 of the aforementioned runes. I go to purchase 3 more, and get stuck at the dancing kat gif. After 20 seconds, I close the processing box, and attempt to purchase the 3 runes again. This time it gets stuck at the confirmation screen with morde and yi, and i cannot click the continue button, and end up closing the client. When I relog, I have 12 greater marks of Crit Chance. This was during the 30% off sale.

My summoner Name is DavidKeviN, could you refund the extra three runes for me?