Very sorry to hear this. Be sure to check your policy for uninsured motorist property damage coverage in light of the likely uninsured nature of the at-fault party.

Depending upon the law in your state, also look at going outside of the traditional claims adjusting resources, such as KBB, to get your actual vehicle value. In these times of extremely high demand for used cars, it may be worth paying a couple of hundred dollars to get a valuation from an expert in the field who could qualify if you need to go to arbitration or litigation.

Also, it may be worth contacting a lawyer in your area who is well-versed in bad faith denial of insurance claims if the insurer is unreasonable in adjusting your claim.

Best of luck. Let us know how it turns out.