Near as I can tell, there's no reason you can't or shouldn't have the other party's insurance info by now, as well.
What's your policy say? What about the other party?
Loss of use
Rental vehicle
Medical coverage
Vehicle and camper collision coverage
Sounds like there's no doubt truck and trailer is totaled.
It may seem daunting, but squeaky wheel gets the grease and unless there's something else to the equation than what you've told us, you should not be out of pocket for this permanently.
If you don't know or understand your policy, now is the time to get help figuring it out.
If you don't have full coverage on your belongings then you' better get after the other insurance company.
Good luck man.