Marie, this might be difficult! Here is my experience with WAMU... I sent a short sale package to them via UPS in which they signed for last February. I have a signature from UPS. I also faxed it to them. They told me that they never received it even though I had proof. After having several conversations with them all of the sudden one day they told me that I did not have Authorization to have a conversation regarding the account. Even though I told them the exact dates and times I sent the authorizations and had conversations. They said it was too bad and would not talk to me. The next thing I knew the number I was using no longer worked. Oh, brother. It was an absolute mess! That clearly never made it to a short sale because I couldn't get anyway with them.
I suggest that you google WAMU and find there website and then contact a branch. Maybe someone there can start heading you in the right directions!
I hope this information helps! Best Wishes!