Allstate interview questions

There were three people in the panel, interviewers were rude and very dominant,few questions which they asked themselves did not had concepts clear about them, answered questions confidently on collections but when they debated saying my answe is wrong then i argued back saying my answe is right as i was confident enough. They themselves did not know how hashmap works internally, just blindly asking questions, they thought themselves as very strong,when i answered the questions which they thought i can't answer, they took it on their ego, finally a guy came and said the feedback is negative, they will consider me for furture opportunities for some diff project bcoz they knew i am good, but interviewers rejected me out of their ego, overall very unprofessional way of interviewing,very disappointing.