Incomplete order

Am very unhappy with the service and how they don't see what they have done wrong or try to fix it. I placed an order at and did all the payments online on the day of the delivery I get an email saying that they don't have stock so I would be getting the full order. When I placed the order online everything was in stock and hence I bought the items. I called the call center at 16:30 on the 15.12.2020 they advised that there is nothing they can do, I asked for the refund for the whe order because his was a set. They advised that they would charge me 50% handling fee and a R40 amount for delivery. If the website had advised that There was no stock i wouldn't have placed my order. Now am paying for something that is not complete. When I spoke to the agent Shady she td me that finance says I should pay for the order and will refund me for the other item that was not in stock. Am really upset because if when I asked to speak to the manger she kept telling me that the manager will tell me the same thing.. She kept me on hold for more than 30min whe waiting for Maxine Salassa the manager till they hang up on me. I want my refund the whole amount.