Sorry to hear about with what you are going through, but unfortunely, this is what we are up against with short sales. The bank and MI company work on their time and not yours. If you call them too much they will put you at the bottom of the pile, and that's a big pile. I have sold enough short sales and you just, somehow, and I know its hard, have to be patient. Rarely, is their way to get them to move much quicker than they already are. In this market, there are so many short sales they have to go through its very hard for them to put you at the top of the list.
I hate to be the bearer of bad news but it's very hard for them to rush your file. Good luck to you.