FAULTY CAR

I'm very unhappy with the servicefrom Kilokor. Got the Tazz on the 22nd of Dec 2023,and hear the the sound of clack clack when car is idling, i asked what is that, and sales person said we need to ask mechanic, while driving home, this car start jerking in traffic, i turn around to Kilokor and one of the guys test drive the car and said nothing wrong. On the 23rd of Dec 2023, same thing happened and we were stuck in the middle of the road. I informed the sales person about it and send pic of oil leak as well and she informed me that Kilokor is closed now and will be opening on the 2nd of January 2024. According to them, this car was serviced and went through roadworthy. So everyday this car is jerking and just stops in the middle of the road and yesterday(28th of Dec 2023) it was doing it twice. Eventually after a long wait we manage to get the car going. I inform the sales person again. So i am over this car, and struggling like this and i'm not going to do this for 54 months. I want Kilokor to either sort this car out from front to back with all the things that needs to be fixed or CANCEL THIS DEAL, OR CHANGE THE CONTRACT TO A RELIABLE CAR. HOW ON EARTH DO YOU SELL A CAR LIKE THIS TO THE PUBLIC AND NOT SAYING ANYTHING ABOUT WHAT'S WRONG WITH THIS CAR? I want the management of Kilokor and sales person to sort this out ASAP, as i need a car to get to work and back and assist with alternative transport arrangements. I don't know if it's the alarm, central locking, tracker, dirty fuel filter, spark plugs, head gasket or what, but this car needs serious inspection, even lose power up hill.