Company damaged my car

Car Mania JHB car hit my car at the back around February. The driver had no driver license but the car belongs to Car Mania JHB, and my question is how could a company give vehicle to someone who has no driver's license. I did follow-ups with the Manager Ishmael and he asked me to send a letter of demand which is written by my lawyer and I sent , but he acted as he never received any letter and never bother to fix the damage.