Why not just contact an attorney in your area to discuss the issues. Not sure if you sustained any personal injuries as a result of the accident. If so, you can discuss this as well. Not really shocked that your company did not total your vehicle. Good luck.
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Your insurance company would have probably totaled your car if it knew it was going to cost this much to repair. Obviously, big surprises arose during the repairs. You probably have a claim called "diminished value". You need to consult with an attorney to pursue this additional claim. Also, if you suffered injury, you should at least obtain a free consult with a personal injury attorney near you. Find one on Avvo.com.
Problem is they've already paid the money to have it fixed. I doubt they'll go back and declare it a total loss because not only would they have to cut you a check, they'd also have to pay the auto shop which would be twice the amount
At this point, I agree with the other attorneys that the carrier will not total your car now. You do not indicate how old the car is or how much your car's value has been diminished. Unless it has been diminished significantly, it is probably not big enough for an attorney to take the property claim. You will also need an expert to give evidence how much the value was diminished. Please note that you are probably better off that it was fixed and not totaled. In Virginia, you would have only gotten its cash value as a used car. This amount is probably a lot less than the value of getting it fixed and keeping it as the value in a car is driving it not selling it. If you also have personal injuries then you should be able to schedule a free consult to discuss both issues. I encourage you to do so. Good luck!