Omg I was in the same situation once upon a time. As I got my new passport and I-94 made, someone turned in my lost old passport. I too transferred from a university to a community college and had the toughest time renewing my visa. The interviewer was the meanest man ever and it seems to them that switching from a better college to a community one only proves that you have no intention to study and rather have plans to stay in u.s. I don't know if this helps. but good luck!! Why don't you try to contact the u.s embassy here and in nepal too??