At one point, I called out an interviewer during the interview on his bad behavior. However, this is not a good solution. I think he learned his lesson, but it certainly cost me a good relationship with anyone else at the company. Thankfully, it was a startup and I didn't need the job.
The best solution in my opinion is to complete the interview, then politely inform the HR person that you are no longer interested in the job. If you are doing an onsite interview, you can feel free to leave during the middle of the day. When they ask why, politely say that you don't believe that this will be a good fit, and thank them for their time.
Rude interviewers imply rude colleagues - if they are rude to you when they are on "interview behavior" you don't want to know what they are like otherwise.
The best solution in my opinion is to complete the interview, then politely inform the HR person that you are no longer interested in the job. If you are doing an onsite interview, you can feel free to leave during the middle of the day. When they ask why, politely say that you don't believe that this will be a good fit, and thank them for their time.
Rude interviewers imply rude colleagues - if they are rude to you when they are on "interview behavior" you don't want to know what they are like otherwise.