Renault Umhlanga service centre

I booked my car in for a service, called them on Saturday the 29th of February for the car to be serviced on the 2nd of March. I delivered the car @06:45Am and only received the car back @14:15Pm. They are slow at what they do,no seriousness what's so ever, no notification as to when to expect the car, for a car which was taken for a service for change of oil and brake pads that took very long, it was like the car was booked in for a major service in which it was not. There's no management concerned about our well-being what's so ever. Coming from my night shift and made me wait several hours is not on. I'm never ever going back there again. I'd prefer going to Renault Durban Central. Last time I was there, I dropped off the car @07:30Am and by 10:30Am they were done, what these guys were doing, I just don't know what to call it. It's hurts to be treated like this where by when month end comes they expect you to pay for the vehicle with no questions asked but they service doesn't even deserve a rating. I give them negative 1(-1).