The game where the victims get punished.

In the last days I planned on climbing more. I got used to not using the chat anymore, because I wanted to avoid the 75 games mute. But recently, this is what happened to me. Climbed 2 divisions, reached Silver 3 with 50 LP, decent, planned on playing more to get to gold, not my first time getting there, but suddenly, players like this person pop up in your games, I was playing jungle, all good, decent bans, declared Warwick, nice teams, friendly guys... BUT SUDDENLY, the SUPPORT thought it would be nice to pick Warwick, and just type in the chat : "Hey, pick Sona for me", he didn't ask me if I wanna change with him or if I want him to pick Warwick for me, he just picked it, of course, I didn't own Sona or any champions that he wanted, I only had Blitz, a good support which he also had and played, but he decided that he just doesn't want to play Blitz, so he said "Ok, I troll :D", and then refused my trades, so I can play my Warwick, only typing ":D" in chat, I got mad, and I really didn't want to get even more mad by playing that game,so I just dodged in the last 2-3 seconds, guess what, the guy can just go and play another game. But me? I have to wait 25 minutes and lose 10 LP because of that guy intentionally trolling me :). Thanks Riot, hopefully you`ll care about this, even though most likely you wont, try to figure it out. :)