Kelston Ford Cradock bad service

I took my car in on Monday to Ford Cradock asking them to check why my car does not start. Nothing was wrong with the car no noises no shaking no nothing just does not want to start on its own. They told me what was wrong and that I have to pay before they order the spare. I paid the R2400 and was told the part will be here Wednesday. I told them I have to take my children to university on Thursday, and the assured me Wednesday I will have my car. When I got there Wednesday morning no one knew about the spare and no one ordered it. They assured me they will get the spares somewhere and I will have my car Wednesday afternoon. Then afternoon they said the spare they ordered was not the problem and they have to look for another problem so I will get the car Thursday. So here we are today now they say they don't have the spares now and the car will not be finished today and they don't have a loan car that I can use. So I told them to close my car I will drive it like that seeing that it just does not want to start on its own so I will push the car and drive it like that. When I left the car is shaking it sounds like the engine wants to fall out and making noises and the engine light is burning now. So here I am. I can't take my children to university on time, I can't drive my own car anymore because now it's falling appart. My wife is loosing her income because she deliveries her orders with the car, and Ford is saying they are sorry the manager told me he did speek to the employers because they did not order the spares in time but that still does not solve my problem and the manager just says oh sorry