My experience with Tulane has been very positive as well. I had to reschedule my interview date because of a course conflict and the lady with whom I spoke, Susana Vargas, was very accomodating. The electronic files were not working the day I called and she took down my information by hand and said she would reschedule and confirm for me when it was back up. I called once before too, to confirm my application was complete. I spoke to someone else but she was also very cordial.
Keep in mind that a lot of schools are flooded with people calling, emailing, etc. about their statuses and scheduling/rescheduling interviews. Of course, we assume that it is part of the admission offices' job to handle inquiries like this, but we can all understand how getting dozens of these calls each day can make anyone a bit irritable, esp. since there are many other jobs these folks need to handle. I've encountered some fairly rude and curt people over the phone as well, at other schools. But I figure let's just be patient and hopefully everything will work the way we want! 🙂