Auto Insurance negligence?

I was involved in a comprehension accident, a deer hit my car that was 2mos old( a 2012 S60 Volvo w/ 2Kmiles) that caused significant damage to the front right passenger side that repair was estimated at $15k . All the airbags deployed on the vehicle. I reside in NC where the repair cost have to be 70-80% to total out the car. Based on appraisal that I was not informed of nor present for and have yet to receive a copy of the appraisal to determine the car would be repaired instead of being totaled. The car was valued at $33K, The car was repaired by the Manfuctured Dealership which was VOLVO. My car was in shop for 6 weeks and the total cost of the car repair was $21k, I finally received my car and within two days I was back at the dealership because the seatbelt was not installed AT ALL, the console light was installed backwards, and there was a puncture in the front passenger door from when they were installing the airbags in the dashboard. I have documentation from that service. They "installed" the seatbelt and corrected the light and I am awaiting the part to fix the door. Meanwhile I have to return back to the dealership because the headliner of the vehicle is coming down and was installed half hazzardly. At this point I am livid and share my concerns with the quality and safety of the repairs performed by VOLVO. I spoke with service reps at the body shop of VOLVO and the service department I expressed my grievance and they stated they understood and definitely would be upset. I expressed to them I do not feel safe driving the vehicle. At this point VOLVO service stated they tried to get my insurance company to total out the car because the damage was extensive and would be a huge repair. The initial estimate of the repair increased by $6k by the time the car was complete, which put me $3k away from the car being totaled. I returned to speak with the GM of the dealership as well as Service Mangager to inform of my displeasure with the quality of work performed by the dealrership on my vehicle and my desire to be taken out of the car. They stated there was nothing they could do because they cannot buy back a car that has lost 70% of its value. Regardless of the quality of work performed by them.They offered to try and repair the headliner and go over the car extensively to ensure safety and quality. I stated I am not sure if I am comfortable with their ability to properly and safely repair the car. How do I go about resolving this issue? Can i have the insurance company reopen and total out the car ? And is it safe to state that the process in which the insurance company handled my claim was unfair and in bad faith?