Accident Insurance Company What If I Disagree With An Insurance Company's Accident Investigation?

What if I disagree with an insurance company's accident investigation? - accident insurance company

I was involved in a minor accident in California. A woman attended a parking lot hit the side of my car on the side of the fuselage. My insurance company has ended its investigation because the other party has never been contacted. The insurance of the other party to the conclusion that we were both equally guilty. I do not see the logic of what might be his fault if he runs in my car (all the damage to the rear of the car) was completely beside myself. You do not know what to do next. I Should mediation?