RAY BAN SUNGLASSES DO NOT BUY THEM FROM SUNGLASS HUT PROBLEMS WITH FRAMES

I bought a pair of Ray Ban Wayfarers. After a month the frame (black) went totally white like a corrosive patina or some kind of chemical would have burnt it. I only cleaned my glasses with soap and water and or with special sunglasses wipes. This product is made of bio-degradeable plastic and that is the root cause of these glasses turning the colour they are. The glasses themselves which are made from normal plastic did not colour but the black frame coloured. I gave the glasses in at the Waterfront, Cape Town branch for repairs and or a refund but they then only came back to me about four months later with the answer that this does not fall under the guarantee. I see this as a defect on the product and this is not fair. It is the frame that is made of a material that is not sustainable. The call I got from the store manager was, you can get a second pair at 50% cost. I then told him but that is what you offer all clients. Then he said they will not replace these glasses. I said to them that I do not accept this answer and I either want my money back or another pair of sunglasses that does not have this defect. I have bought many sunglasses from them but this apparently does not count for anything. The answer was a bit lame and I think they never even contacted the supplier to ask if the product could be replaced. The probably never even did the effort to try and get a reply or they are unable to provide a suitable alternative. Sunglasses frames should not do this and I have never had this problem before with any other Ray Ban or other brand glasses.