BAD SERVICE

My mom purchased a car at EAE Motors in May 2021, a Land Range Rover Evoque which was a second hand car in good condition,. We had agreed on some changes to be done to the vehicle and they were not done, but not properly and when the car was delivered i sent it back to them. I had to fight with the dealership to get the car. Collected the car on the 19th of June 2021 still not happy with some of the things we had agreed to be changed but were changed. I was no given the service plan as promised that the car was properly serviced and had a 2 year free service cover. I was not given the car manual and i did request it i was told to go to Range Rover they would give to me, to my surprise i went to range rover and was told they sell the manual for R5000 and if i wanted it i had to pay that much. After a month of using the car it started giving problems, speed performance was low it could not go over 80, one of the window's machanism stopped working, the locking system would not lock and it started smoking. Took the car to Range Rover for check up i was told the last service that was done to the vehicle was in 2017 hence i was not given a service plan. Attached is a copy of the minor service that was done by EAE Motors, a copy of the quote from Range Rover also attached is the warranty card from AA warranties that were suppose to do the 2 years free service but when they called they said they do not cover whatever that needs to be service now. Please assist i have exhausted all my resources to to find help as the dealer does not want to help and they are very rude. I have had the car for less than 3 months but i am not finding joy in it.