So, as a current student, I totally understand why that would be so frustrating. I also would like to not make excuses, just because I am a student (especially because I am a student), but let me give you a little backstory and maybe you can understand their frustration a little better. The admissions office is the heaviest part of their admissions cycle (I think that parts obvious), they had a combined admissions tour for all 3 programs here this past week (Bio-med, PharmD, and DO), AND they were given the "opportunity" to move their office from the main building into some new, separate building (so new that I heard about it, but still don't know where it is).
Now, while the admissions office has it's hands full, and even if they are brilliantly rude... I would have to say that choosing your medical education because of the admissions staff is a poor choice. I have had SOOOO little contact with them since I put down my deposit check that I PROMISE you it is not something that will affect your education. In total, I have actually stepped in that office three times, two were to go through to financial aid and the other visit was to ask a question.
There is absolutely no excuse for rudeness, especially as their job is to help perspective students through the difficult process of application/interview. That said, they are also human and are under a bunch of extra stress. Good luck with your application.