<p>They'd have to first review your application before they rejected you--if they didn't receive everything, I don't think they even look at your app. Definitely call the admissions office. My bet is that all your stuff wasn't received or properly processed. If you are a good candidate you'll probably be put on the waitlist by default now :-/</p>
<p>And thank you :)</p>
<p>EDIT: The same thing happened to my boyfriend for Graduate School (Plasma/Fusion Physics PhD...ps he's a CU SEAS grad as of 2 weeks from now!). MIT lost one of his recommendations and didn't realize it until after they sent all their acceptances out. He was reviewed finally, and put on the waitlist by default. He will be attending Wisconsin.</p>