I am an MS1 at TCOM and there are small herds of interviewees on campus about 3 days a week.
Take heart, though. I wasn't interviewed until October 29 last year, and one of my classmates didn't interview until JANUARY. 🙂
Hang in there. Call the Admissions office if you want, or even e-mail the director--they are very nice and won't be at all bothered. Just tell them you are very interested in interviewing and want them to know that.
It can't hurt, and it might help.
Good luck!