Unroadworthy vehicles bumps other motorist and never take a responsibility of their actionc

Their Driver bumped me from behind with the delivery van,he agreed to be at fault and promise to claim from his company so they can fix my car, it has been five months now i sent the mail and nobody replies, after checking their reviews i noticed that thats how they run their businesses,when i call the driver and his supervisor they both hang on me, i tried reaching the fleet manager, he asked me to send my cellphone number so he can assist me, its been 5 months and three weeks now he never sent not even a "please call me" mesaage, so guys whatch out of UPD unroadworthy vehicles on the road they will bump you and get away with it.