i mean rude people are going to be rude people, not much can be done about them. If you're in a group that you don't like or doesn't like you, not much can be done other than asking to be kicked or just leaving the duty and eating the 30 min penalty. If the group is incomplete (less than 4 people) then you can leave without penalty but if you are the first to leave you can't do anything about it. you can report someone for harassment but it would most likely be chalked up to "playstyle" differences.

in the end it's just a game. try to have fun. hopefully you get matched with people with the same mindset. I don't expect too much talk in dungeons.