Brian,
Start low and move higher...Start with the trooper that wrote your crash. In the end, he or she will be responsible for the whole thing regardless of who you talk to above him or her. Because the trooper will write it all up in the end, the main thing is to keep your cool..easy to write..hard to do.
I would also do some of your communication in writing if you don't get action on your first call to the trooper.
If you still don't get any action, ask for a meeting with the troop and his boss. Have one or both explain why things are or are not happening.
After that, move up the food chain some more.
