Start by checking if everyone is safe. Move your car out of traffic if...

https://wiki-zine.win/index.php/What_If_the_Insurance_Company_Says_I%E2%80%99m_More_at_Fault%3F

Start by checking if everyone is safe. Move your car out of traffic if possible. Always get a medical checkup immediately, even if you feel fine. Call the police to get an official report. Take photos of the scene and grab contact info from witnesses