What do you do after an accident?
Fist of course you notify the police and your agent. But then it so important that you select a great Collision or Body Shop. They will get the vehicle in quickly, get the Insurance Appraiser on location.
Then negotiate the repair and replacement needed for your vehicle, they have to advocate. The Insurance company will try to spend as little as possible on the repair of your vehicle.
You deserve to have your vehicle returned to pre-accident condition.. no exceptions.
Most shops will either have or arrange to get you a rental. The rental is tied to the scheduled time the Insurance thinks it will take. So it is important that the shop can do the work in a timely manner and communication is vital between the shop and the Insurance company.