Sell what you you have in stock

This thing of Takealot of selling something to you then later find out they don't have the Item you Purchased is not nice, that was a gift when will i get a chance to look for another Item tome is not on my side, and now I must make another order and pay for Delivery? They don't even refund they put as credit, I don't want credit y ddnt they ask if I want a different color?