Get the job done, but if something goes wrong on the job done, want more money and ignorance.

I took my vehicle in to MDS for cambelt repairs. The quotation was R24000 and the warranty paid R10000. I paid R13000 for the rest and had problems with one of the injectors and my diesel pressure sensor in the following week. I took the vehicle in to MDS and they said because the head was done I will have problems with the old attachedments on the head. Rholand at MDS said I have to pay when I bring the vehicle for repairs. I went to another RMI workshop and they said it is MDS responsibility to fix the vehicle. I did send Rholand at MDS a message and it was opened and no reply. It was the 2nd of November and today is the 2nd of December. My problem is the one injector is leaking oil and the pressure sensor was bend and causes noises and difficult to start.