Sleepless:
It's not that Nova is "stringing him along" or false advertising. The fact iof the matter is that we simply receive way too many qualified applications year after year and our admission staff is limited. There are only 5 people working on the Dental admissions organizing the applications and only 2 people sorting them out to see who should be invited. If your friend was told over the phone that he's guaranteed an interview, he should've right there and then set up an interview date during that phone call.
He might've misunderstood with whom ever spoke to him over the phone that he's getting an interview. They might've told him that his application will soon be evaluated instead of receiving an interview. I don't believe the incoming class is full yet, but pretty damn close! Nova, I heard has received the most applicants this application cycle. Believe me, your friend is not the only applicant out there feel left out!
Your advice to him should be to have him continue to try to contact Nova Admissions and have him contact Su-Ann and not her secretaries. I strongly believe that your friend is an outstanding applicant, but unfortunately and realistically, there are simply way too many of "them" than seats available.
Wish him the best of luck for me!
Andy