SB fuel.inectors damfed my car/11 karinga street

February this year 2021 i took my car to sb fuel injectors as it was having a problem with one of the injectors. They charged me 4000 . I paid the money and after some few days i was told to come and fetch the car as they claim it was raedy . On our way back home the car started to have a hige black smoke coming from the exhaust pipe a. I contacted the company and they said the broplem is with the piston . Amd my money went down the drain just like that . I took it back and they charged 15200 because i am the only one working i paid the money in installments up until i finished.. they told me i can come fetch the car is ready my husband went to fetch the car , the glass window of the canopy was broken and they promised to fix it and i felt thats not a problem on his way back he heared some noise coming inside the bonnet of the car . He opend the bonnet and tge water in the reservoir tank was boiling . He went back and told the people of this company and the onwer said we have to fix the radiator tjis came to me as as shock because when we gave them the car there was no problem with the radiator . I had to ask another mecjanic to come and check the radiator and he confirmed that its not the radiator its tge top gasket . I aksed my huaband to take the car back amd the onwer was very rude to him . He said je is talking **** . When i asked him to fix my car je said he is busy fixing other cars . My cocern is what abou the unfinished job in my car which i paid for . I have never ever felt so humiliated and disrespected in my entire life. They are in stikland no 11 karinga street Bellville here is the no of the owner +***8. It looks like its not a registered bussiness.