Poor client care and harassment

I accompanied a friend that was taking in her vehicle for repair on the Sunroof l. The vehicle was booked and all. Upon arrival, we were offered a seat and the guy progressed towards the car, he then found the car locked, which is not unreasonable, then came charging towards us shouting with pointing fingers that we should not lock the Vehicle on the dealership. Suprised and shocked that that even happened i made him aware about the dealerships policy on property loss. Without a response, he stormed off and took the car in. 30 minutes later came back with the keys explaining what the problem was and that it has been fixed. When we got to the car, now the whole car's windows wont open remotely, sunroof not working. He then takes the vehicle again, not saying anything to their client, now we decide to go back into the dealer waiting area and wait. 30min later or so he comes back to deliver the keys. No explanation whatsoever as to what is going on. For us to return to this dealer would be madness.