princess - I also took the August MCAT. I sent my check in to Mayo on 9/24, they cashed it 10/9, and I didn't hear from them about the phone interview until 11/19. Not everyone who sends them the money gets a phone interview, which is kind of like their secondary. They apparently phone interview about 15% of their applicants. Of those 15%, 20% are invited for on-site interviews. Good luck.
mpp - CONGRATS!!! 😀 Way to go! 🙂