Order cancellation from takealot

I placed an order on 22 July 2015 with 5 items. It stated that all the items are in stock and that it will be delivered on 14 August 2015. So i waited for the order to arrive, and then I received an emailing saying that the supplier of the one DVD I ordered is out of stock. Which is weird since it was in stock when I ordered it. I rep**** to the email stating I want the DVD and not the credit. I then received an email last week saying that the supplier of the guitar strap is struggling to get it, but never said that any of the other items are out of stock. Today I received an email saying that the supplier went out of stock of the guitar stand I ordered and now I will receive a credit. I ordered the items for a reason. I want and need the items. What I do not understand is when a customer places an order, that takealot doesn't just order the items and store it under the order number for the customer as to not having to keep on emailing them to cancel their items. I thus want takealot to sort out this problem and send me all of the items I ordered and not send me an email because they could not make up my order as they received the items.