Banning Selected Champs to troll

For multiple games now there are people that are banning champs others have selected just to troll. Not because they're OP or have a high win rate but just to be a troll. This thus creates a tilt in game for one to multiple, if not the entire team, and has a higher chance of a loss if not guaranteed to lose. This isn't acceptable behavior and needs to be taken care of especially for ranked. Some people want to climb or just climb enough to get to where they should or want to be but get paired with people who are on the chopping block, have a non selected champ banned by their team (sometimes due to the other teams selection), flip, and ban a selected champ on their teams side just because they don't give a flying fudge what happens to them or their rank. It's fine, not okay, for normals but unacceptable for ranked just because they're favorite champion was banned.