Bad product and poor service!

I bought a rug from Game at Menlyn Mall at the beginning of November. I went in the store and had a look at rugs. I had a gentleman employed at Game Menlyn help me look and purchase the rug. I paid for the rug cash and after a while I lost the slip. After a few weeks this rug started falling apart and flaking without any apparent reason. I went to the store with the rug and explained to the customer services consultant that I had bought it there and although I have no proof of purchase I have an employee who can attest as a witness that I did indeed buy from there less than a month ago. I gave dates and time, method of payment to help find my purchase on their records. The consultant found this particular rug in the store and matched the barcode to prove that they do indeed sell this product. They then called a certain gentleman who claimed that they could not find record of my purchase and he refused to have me return or exchange the product. Or compensate in any manner. I have not had this rug for a month and everyday it is falling apart. I need to please be led to the right channels for someone who can help me. I paid R600 for this and it is a completely horrible product. I have pictures and wish there was a way to post on here to show how horrible this thing has become in a matter of few weeks.