Yeah - Dynamic Queue

So, I just played a game of dynamic queue where. during champ select, 3 players joined together and insisted they would take whatever roles they wanted not what was assigned (or they chose before they joined the queue). I have screen shots, but I have no idea how to submit them (if Riot even cares). I don't understand how people can behave so ridiculously in a game built around cooperation and team work. I also am so frustrated that there is no obvious way to report the behavior. I guess Riot is telling us to all act similarly.

Really frustrated, long time player...