They're flushing the app pool and starting again. I got the letter, all my crash pad roommates did too. It's a generic form letter. What did you think, by sending that they would change their mind? What you did was erase any chance of ever having a shot there, ever, since they turned around and reopened the window. If you got all butthurt and took the time to draft a response to a form letter, you've got some seriously thin skin, and it comes off as completely pathetic and immature. Right now the HR people are saying "wow, glad we didn't give that guy a shot." Quite possible other HR departments are looking up your listed quals and matching them up to apps in their stacks for a black flag too.