Worst service ever

I do not know if I should say I regret servicing my vehicle with Carnival Toyota or if I should say I regret buying a Toyota Corolla with questionable quality. Having been driven Toyota RunX for over ten years and never had any issues or whatsoever with my old vehicle I never thought that at this moment I will be singing a different tune. I took my vehicle for its first service which is 15000km/ 12 months on the 22 March 2016 and it came out with body scratches from the washing bay. I brought the problem to the service consultant, Anet Nel and her manager Teressa's attention. They asked me to return the vehicle the next day for polishing, of which I did. Teressa made a comment which left me astonished that nobody has ever complained about the same issue that I am complaining about. Teressa even mentioned that there are cameras installed in the washing bay. I was very upset as she imp**** that I was lying about the whole thing. After three attempts they still failed to repair my vehicle.