Charged for a service not rendered

JSN Motors/Bryanston BMW charged me for a services not rendered, how do you service a client vehicle and not wash it? It doesn't have a good outlook to work on the vehicle give it back with oil marks all over the body. Not to mention the uninterested Dewald Van Der Westhuizen whom stir all this and walk away with a cold 'he is sorry' now I am sitting with oil marks all over the car even on the roof lining and they expect me to bring the car back for a wash. Why wasn't it washed in the first place?