Wont give refund for faulty product

I will never buy from any cross trainer shop again. I recently bought 3 springbok shirts, R2000, for all 3. I bought them, we were very excited, we are going to support the team. Got home and fitted them. Perfect, they fit. We were getting in the spirit for the game so decided to keep them on, Ill wash them later so they are clean for Saturdays game. After about an hour the orange on the shirts started to fall off, so its like, ok, shirts off and back to the store, nobody wearing them anymore. Couldnt even support the team in the very expensive shirts I bought. When I went back to the shop the said I must leave the shirts there, one of the managers will come to the shop and have a look. A week later I went back again because they never phoned me like they said. And the cashier said he is still waiting for his manager to tell him what to do about it. Couple days later I went back again and the cashier said that he cannot give me a refund, he can only give me a gift card. This is not acceptable. Now they want me to buy R2000 worth of stuff that I dont want and dont need with the gift card they give instead of a refund. Doesnt work like that. Im never buying anything from that store again