Pathetic service

I took my Hyundai Tucson for service on Friday the 20th /10/2017 at Kempton Park and on Saturday morning i noticed my sunvisor mirror was broken and when i took the vehicle for service the mirror was not broken. i called on Saturday to inform the dealership about the damage and they told me to come on Monday, i drove to the dealership and i spoke to Gerald the service manager and he rudely told me that he will not assist me and i must leave his office as i am lying . i went to the dealership principal and he told me that he can only pay 50% of the damage and i must pay the rest. i am not willing to pay 50% of the damage for their negligence. Ever since i bought that car from them they is always errors and poor service. when i purchased the vehicle they seem like good people but it is very clear that they full of ****** and they treat black people like dirt. i want justice in this matter i can't pay so much money to be treated like dirt.