Katie,

I'm so sorry this happened to you. I know how disappointed you are. I wish there was something I could do to make it better. If it were me, I'd go in person. I'd take them a "thank you" note thanking them for the time and the interview and ask them when they want you to start. This wouldn't put them on the defensive. But you said you're real emotional right now and afraid you'd start crying (VERY understandable), so maybe you could do it in a couple of days.

Whatever their reasoning is, they're @$$holes.

Hang in there honey!