Dissatisfied with BMW dealer

On 01/10/2015 I took delivery of a used BMW from SMG PMB. Before this I told them that there were some scratches and stone chips on the vehicle that I wanted taken care of. SMG promised to get the car polished by a relevant workshop. It is now a month after the fact and this has still not been done. After taking delivery I enquired several times via email but SMG told me they were still looking for a cheap place to do the polishing as the ones they found were expensive. Now it's been a month and my car has still not been attended to. When SMG pursuaded me to buy the car from them they promised me that I will also be buying good after-sales support and peace of mind from BMW. Now I'm asking myself what happened to that promise as I'm not seeing it. When I bought the car I thought I was buying a premium product and service that goes with it. It doesn't sit well with me that a brand like BMW can say they are looking for a cheap place to work on my car rather than a good quality workshop. I was charged R10 000 on top of the car price when I bought this vehicle and SMG were adamant they can't reduce this fee but right now I'm asking myself what value I got for paying that amount.