Utter incompetence at client's expense

I ordered a Fitbit charge 2 on Takealot on 24 Nov. They delivered the incorrect product (Airpods). I was told that they would exchange the airpods for what I ordered and returned the airpods. Since then I have spoken to at least 10 consultants who all have a different story. Some say that the order is with Fast n Furious and others say that it is with Takealot delivery. For the past few days I have been told that it will be delivered on the day but it never is. Worse still, I was given a waybill number for Fast n Furious but they say that the item is not on their system. I requested a refund but have been informed that its too late because the order is with the courier. The same courier that never delivers. I am incredibly upset that I have ordered and paid for a product and not received it more than two weeks later. There is no sense of customer service and I feel as if I have been ******.