Store purchase failure
I'm a new player to this game, and recently I've been trying to save up my IP for a champion (Nami). At one point while looking through the store while waiting for a match the store showed I had enough to purchase her. However, I was a few points short according to my account. When I clicked unlocked, it showed what my balance would be if I got her, and it said I'd have 72 points left over. I figured that my account simply didn't update after the pervious match and unlocked her. But when I did I didn't get her, and I was 6300 ip short in my account. What do I need to do to fix this?