INCORRECT AND UNFAIR REFUNDS DUE TO THEIR MISTAKE.

I ordered an item from Raru on 28 Dec 2015, which was available for dispatch within 15 working days. It later went on backorder, eventually going out of stock from the supplier last week. I was only refunded the product's value onto my profile, meaning if I want to order another item, I will have to pay R80 for delivery AGAIN, which is unacceptable since it was their mistake. I demand an additional refund for the R80 delivery fee so I can order another product without paying extra, since I wasn't allowed to add another item to an existing order to replace the out of stock item.