Trios making the game less fun ):

I was in a game with a trio premade with one other random. Apparently my support decided she wanted to walk into the enemy team 5 times and die. I played safe and ended laning with 1 death but the Trio decided that I was the main target. ): Is there any way I can report these these players to a rioter? I don't want to post names on the forums. They also decided to tell the enemy team that I wanted to AFK and that I was trying to get them to surrender. I think chat logs would vindicate me of those charges. Thanks.