RP not calculated/subtracted correctly

So, I just bought two $10 RP cards from 7 Eleven. I used both of them and I got total of 3015 since I already had some before in the account. I just bought Debonair {{champion:81}} and it deducted more than 375 RP!! btw it was on sale for 375 RP thats why I bought it :D now I have 2265 RP Riot Please gimme back my RP. It took 750 RP off my account...
Report as:
Offensive Spam Harassment Incorrect Board