Esurance totaled my vehicle then changed their mind after a month an a half and had me sign over the title San Francisco California

Hey never trust esurance I have a 2002 chevy trailblazer. I was driving down the road and hit a pot hole everything was fine until I stopped at a red light. Went to take off and the rear end and trans just went. Something shot out the differential and the trans started smoking and would not go into gear at all. So I call esurance and they said yeah thats a claim so went thru with filing a claim and they co parts come get it from my mother-in-laws house. I got a call the next day getting told that is was totaled. Then a week later it wasnt totaled, acouple days afrer that it was total. Then after I signed the title over to co parts it  wasnt totaled I have been dealing with this for a month and a half. Then I get a called them telling me once again it was totaled. Once again two weeks later its not total that they wont cover anything because the damage was because the age of the vehicle. Im just tired of the run around.