Takealot doesn't communicate internally

I ordered a refurbished pc bundle from Takealot. Received my box on the day requested. The incorrect power supply for the screen was sent. I requested for the screen to be collected and replaced or the correct power supply to be sent. Takealot advised we had to return the entire bundle. This wascollected on 1 Jun. To date, radio silence. Every email and call answered has the same response "we need to contact the warehouse". How long does this take? My son has online schooling that he is missing due to your staff incompetence and your procedures falling flat. I guess with the riots now, that will be another excuse and my refund or alternate product will once again be delayed. Disappointed. Frustrated.