It won't let me add people to my block list....

Well that is a possibility, but just an FYI for you about the Block list: It does not, I repeat, does not stop you from being put into a game with any of the Blocked players on your team. You just can't see their chat nor can they ever send you a friend request.

Well the muythai guy, he is the number 8th or so most played lee sin, this was over the course of different days.