No delivery for over 2 months and comms stopped

I ordered a set of 2 Toys from Takealot. The first part was delivered. When I questioned about the second part, they tried to argue that it wasn't part of the deal but finally agreed it was and will be sending it to me. For the past 2 months I send a mail every week asking on status of the order. I get the same response - they are sorry and will check with the suppliers and get back to me. The initial mail said I will get it in 2 weeks time. From last week they have stopped responding to my mails. This is getting beyond frustrating now as I have been waiting for over 2 months. If i was owing them money, I dont think they will be this patient and I will already be blacklisted !!! I paid up front and I want my stuff. What is so hard about that !!!