Want a replacement item instead of refund

Hi<br> <br> I ordered a set of JBL headphones in late November 2015 for which I paid R999. 3 weeks later the headphones break. I log a return and specify I would like the item replaced even if it is a different color. 2 weeks later Takealot instead credits my account. Only problem is the headphones now cost R1299. I purposefully specified I want the item replaced and not credited. This now makes my buying experience with Takealot very unpleasant. I now have to fork out more money just to have the item that I originally bought. I was told the reason is because they do not have stock. However they have stock of a different color but cannot give me a different color. When a customer returns an item that broke 3 week after purchase, you should leave that customer with the ability to replace the item without having to fork out extra money. NOT HAPPY!!<br> <br> Return ref# RRN-b527-e75d