Awh man, that sucks. you must've been raging !!!
What kind of car is it?
The sensors probably detected an impact and thought you were in a crash.
Does the engine start ? I'd be very surprised if the car isn't absolutely fine, under the skin.
Personally, I'd get it to a diagnostic centre which can interpret ECU fault codes and reset them, rather than a main dealer.
A panel beater will probably be able to sort the damage for a couple of hundred bucks, depending on the extent of the damage and your location.
Check out your policy for NCB protection and contact the insurers to see what the loading on your policy would be if you don't have it.