Central Locking Issue in a Brand New Nissan Qashqai

In July 2020 I purchase a brand new Nissan Qashqai at the East Rand mall branch. The services I receive was very poor, I did not even receive a gift for my purchase. Three months later the car started giving me issues. The central locking system does not work all the time, often I have to manually lock and unlock the car with the key. I informed the dealership about this issue and the car was brought in. They confirmed that there was something wrong with the central locking system and they ordered a new one which was installed. However, three months later the car started giving me the same problem. I am hugely disappointed by Nissan and I would like this car to be taken back as I cannot the be experiencing the same issue over and over especially on a brand new car which is only 6 months old.