Did they actually call you back if you leave a message? I am not talking about when you get accepted, I know they are all super-nice once you are over the fence.
I have been very frustrated by my experience with the AO of this shcool. First of all, they didn't allow me to talk to the director directly, it has to be the interviewer, but the interviewer never picks up the phone and never calls back, emailing was proven not working either. Today, once again, left a message in the morning and the secretary even promised me that she would pass the message, again I waited whole day, no call back.
At the end of day, to save myself a good weekend, I sent an email to the director with the things I wanted to say. This seems the best I can do for now, although I am kind of in doubt he will ever read it.