Accident/hit and run

I have met with accident day before , where my car damaged due oversppeding tempo trvellor of bikanervala ,who jumped the red signal and came in front of my car. Driver ran out of tempo , some how we managed to get out getting minor injuries but car was severely damaged. Police was called and so the people from Bikanerwala. (Chain reatraurent in NCR) They accepted the fault of their driver and agreed to pay compensation . I agreed after police assured and took guarantee. Now after the claim from insurance I need one lakh approx for my car and Bikanerwala is denying as they won't pay any single penny . As their superior ,mangament have denied the payment. Please help me how to file a case a against them. I have tempo no. And tempo is in the name of company and driver was employee not on contract. I have also witness proof pics Please guide ...