Why don't you contact the Major in the Division you live in and talk to him about your case. You should also keep in mind that you were the best witness to your crime. The information that you gave the Detectives is what they are working on. Sometimes cases(unfortunately) go unsolved. Sometimes we can't find the bad guy. Maybe he was sent to prison, maybe he moved maybe he's dead, but with no one to interview and no one to charge ythe case remains unsolved.