Originally Posted by LLawks
I'm still waiting for a legitimate reply to my comment.
LeaverBuster only punishes you if a significant percentage of your games are leaves - if your friends Wi-fi is bad enough that LeaverBuster permabanned them, they should get some new internet, or play a singleplayer game. That being said, I doubt LeaverBuster was 100% responsible.
Finally, what refunds? You can't get a refund because of the way RP works - it's never your property, Riot just lets you use it.
TL;DR - your friends got busted, and no amount of complaining will help.