Unhappy With Sub Standard Trailer

I purchased a Camp Master Town & Country 200 trailer from Makro on the 25 October 2015 at Edenvale. The trailer was manufactured by Karet. I am in the process of selling the trailer. I have noticed that the entire support framework is rusting which is unacceptable as most of the rest of the rest of the trailer looks brand new. I had a look at new trailers outside the Amanzimtoti branch and noticed that rust was present on most of them. I reported to the Manager from the outdoor department and he said that he will report it to the manufacturers. They have not rep**** to him. There is obviously a serious lack of quality control as the painting is sub standard. This is a latent defect and I obviously want the problem to be rectified to the standard it should had been painted when the trailer was fabricated. I have used the trailer 3 times. I hope that Makro can sort out my problem as I am sure that they do not intentionally sell sub standard equipment. The trailer cost me R12999 and now sells for R15999. For that price I would expect a decent trailer