Damaged headboard gone missing. Still waiting for exchange!

I ordered a headboard that was delivered to me on 22 March. It was wet and damaged. I immediately logged a return and requested an exchange. The headboard was collected from me on 23 March. I contacted Russell N on 29 March who told me that the item was still en route to the processing warehouse for inspection as it was handled by a different courier for larger items. I emailed him images of the damages. March 30th - still trying to locate the item. Next call to Nombulelo N on 5th April. Sent her the images. She reached out to the Marketplace supplier team. She requested an MP number. No idea what number this is! She could not explain it. Carol M tells me it's on the item. I should have taken a pic of this too. How was I supposed to know this? It was never requested from me before? It is now 2 weeks later. Still no sign of the headboard! Why should I suffer as a result of the incompetence of Takealot and the external couriers that they use???