Secunda United Motors: Unprofessionalims, bad service and disregard for other people's time

I am utterly disappointed by the level of unprofessionalism and disregard for Quality Service by United Motors Secunda. I took my car in for service at 07:30, at 15:00 the car was not yet serviced and only went into the workshop at 16:00, the service was rushed just through the service. My car was released after 18:00 and not washed. I wonder why Mercedes Benz South Africa still allows such bad companies to represent it. This is really bad. I will never ever take my car to Secunda United Motors, they don't know what professionalism is and they are really poor at what they do.