How should I go about this situation ?

So I have an Question, The other day I was in
an Car Accident and 18 wheeler hit a car
infront of me which made me hit the back of
him There was really not much damage but
the bumper had a couple Scratch’s On it. so I
was able to drive away in my car. Once I
arrived to the hospital I was there for about
maybe 3 Hours I come out my car is Running
hot no antifreeze in the car so I’m Guessing
the impact made me loosen a hose in the
radiator so I park my car in a neighborhood
I’m familiar with I come back to my car my car
Has been vandalized windows busted and
Rims are gone. How would my Insurance
handle that yes I still owe on the car $11000
to be exact Need help on determining whether
I should go through insurance or just fix it ?
Would they total it blue book value of my
vehicle is $3000