Worst Service Experienced

I have been purchasing from Takealot since April 2013 and have had SHOCKING experience from them. I purchased a game from them with the extension pack on 2 Aug however when the product arrived it was wrong. I contacted them to notify them and they said they would arrange a swop when they collect the wrong product. Followed up Tuesday, they were confirming. Wednesday I followed up and was told they will arrange this and someone would contact me. Thursday no contact so followed up again, then received a mail saying my order was cancelled. Two hours later to ignore that mail they were arranging it. Called Friday to see what was going on and yet another person who said they would take ownership and sort it out, they did not send the mail they said they would, then yet another person called the afternoon and told me my order for the game was cancelled and they will credit me but I was now stuck with an expansion pack for a game I did not have. They keep closing the ticket saying it is solved but I have asked twice for a manager to call but they have not called to apologise and fix the situation just to tell me the order is cancelled. They did not even tell me if they were getting stock?