They damaged my car.

I took my car in for repairs paying R22500.00. The car came back with dents of which I asked for them to fix. It took them 2 and half months to book my car in. I finally took it in again on Friday the 15th, Monday morning I call to check and was advised that all is in order. I make one last call in the afternoon to say I am about to go fetch the car, I am told its alright. A couple of minutes later I am called and told that their people in Parkmore bought the wrong paint and therefore my car is still not fixed. My question is: What were they doing with the car all weekend without fixing it? They have the worst service ever! They ruin my car and now I must be inconvenienced for 2 more days. I will not be using them again that's for sure and if anyone ever needs car service, my first advice will be for them not to go to Car service city especially the one in Paulshof.