Rhiana,
I feel your frustration. I know first hand how interviewer's bad attitude can be devastating.
I interviewed at X school back in february. During the interview, the interviewer proceeded to say condescending things about immigration in general (my family immigrated to this country 13 years ago) and asked my opinion about the differences in medical practices in Korea vs US. I know a little about the system, since I was only 13 when I moved here. I was not able to give him specific details of Korean health care system vs U.S. And I told him that. I felt very uncomfortable during the entire interview, because we did not talk about my personal qualification. He said that from reading my application he knew that I had plenty of extracurricular activities/good recommendations, so he was not going to go into details on any of them. And he wasn't interested in talking about my motivations, my interet, etc. During 20 minutes (while others had 1 hour interview) I felt very dissapointed that I had to listen to this narrow minded guy who wanted to talk about why he thinks immigration is a big problem, how he thinks that other countries need to get their acts together in order to improve themselves, etc etc.
Then for my second interview, the interviewer was 15 minutes late. I felt a little better with him, because he was paying attention to what I had to say, but it was only because I was really prepared to answer his "why do you want to become a doctor?" question by that time. I was so determined to convey my motivation to him that I think I took about 15 minutes to answer that question. I felt so much better, but unlike other schools where interviewers looked at me, gave me comments, etc, he was so darn busy writing my comments on his paper, he didn't even look up during the entire conversation. Then at the end, he told me how living in the community, I may feel a little uncomfortable since I would be perceived as "foreigner/international student". Now I get what he is saying, but I am a US citizen (therefore not an "international student" and I was offended that he made a point to say that.
Overall, I felt really crummy about the interview. Because this school's acceptance ratio after interview is very low, I was convinced that I would be rejected. I was just about to withdraw my application before hearing back from them, but decided to wait to see the result anyway. Then I was notified that I was accepted!
I hope that things will work out for you. Let us know what you decide to do. You should feel great that you interviewed at UCLA!