Disgusting and disappointing service

I did an order via Takealot and paid via eft. They had not seen my payment on time and my order was cancelled. When i sent an email about the service, i received a call from a customer care agent who told me to place the order again and they would give the discount to match the pricing I had received before. I placed the order again and gave her the order number to which she assured me everything was in order and my parcel would be delivered. When my parcel arrives, there is a COD amount for the value which I had already paid via eft. Now, the order has gone back to Takealot with no help from numerous e-mails being sent as well as sending POP TWICE. They also have a horrible habit of letting you know the product you ordered and PAID for is cancelled because they can't source it. I'm sure a big company like that should know daily what is available and what is not. Can they not employ someone to constantly update their systems. I hope to get some sort of response from them concerning this review. The concept of online stores is excellent but not if service is going to be this bad, then I would rather brave the hectic malls and know what I'm getting and when.