unacceptable experience

On 24 July 2015 I drove my 2002 Jeep Grand Cherokee from Johannesburg to Mechanico Service Centre: as per agreement with the person in charge (Andre), I asked to replace air filter, camshaft sensor, crankshaft sensor, fuel filter and to check for a play on the steering wheel. The parts had been bought at Chrysler Jeep Sandton. All the rest on the car was working fine. Mechanico charged me R1254,00 VAT INCL. Since they assured me that they were able to complete the job before the closing of business, I waited in their waiting room.<br> After three hours, they told me the car wasn't changing gear anymore and I had to leave it at their workshop: a driver fetched me home.<br> I had to call them almost every day to get news