Bought something with hard earned money

I'd likea refund on a champion I bought , I did use the 3 refund points a while back and in the store I bought trundle by mistake, I didn't mean to and its unfortunate riot (unlike other companies such as on demand with xfinity) before purchase asks are you sure you want to pay for this item and misclicked and bought it , anyway a refund would be available ? Surely something can be done since RIOT makes a ton of profit of this game and surely merch and YouTube and other things? I did play 2 games with trundle to see whether I like him or not since I bought him by mistake but unfortunately I didn't , think of it as you bought and electronic from Wal-Mart and didn't like it so you return within the week . Thanks. [leblanc-funny]