Be careful when you say anything: Don't allow yourself to be bullied to say anything for that you have to regret later. Know that business networks are closely bound and your negative behavior in an interview will be known to all professional bodies. Your prospects are ruined forever.
Be confident: The more confident you are it would be easier for you to face a rude interviewer. Deal with him without any malice. You will get a chance to ask the interviewer whether anything has gone wrong and whether it is not good time for the interview. Very often the interviewer becomes rude because of something that is not related to the interview or you. He must have been disturbed by something like tight deadlines or such other pressures or somebody is sick at home. He will jump at the suggestion to reschedule the interview.
Know your interviewer: If you find something amiss with your interviewer, ask him questions related to him and his style of functioning. You can ask him how long he has been with the company or draw him out on his success. Such questions, says a career consultant, put him at ease and you can turn the mood of the interview to your advantage.
Don't hesitate to tackle the issue: If you have to answer a hostile interviewer, pause awhile and ask him if you have offended him. Such straight forward questions make him adjust himself to the situation.
It may be a test after all: Maybe you are being tested to know how you would react to pressure. The aim perhaps is to know if you can keep your cool in any disturbing situation and whether it affects your decision. Such puzzling situations very often arise in the corporate sector and as such you may be put in a role play scenario.
Turnaround technique: If you are told that they are looking for an exceptional candidate for the post and they found nothing exceptional about you, turnaround and ask them what is so exceptional about the post that needs the rarest of rare skills. Thus you can turn the hostile situation to your advantage.
Timely exit: If an interviewer turns hostile to the extent of hurting you, you must get out of that place. You must speak to higher ups. If you find none, quit the place. Anyway, you can't work in such a hostile place.
Strong wrap-up: At the end of the interview thank them for having given you an opportunity to talk with them and you are very much interested to work with them. This approach tells them that you are least affected by their hostility. Don't allow someone's rudeness to bowl you out.