Don't Even Think About Changing A Delivery Address

Within 24 hours of ordering I realized I mistakenly chose the incorrect delivery address. The order was placed on a Saturday and I called them the next day (Sunday) at 11h05 - they open at 11h00. No one answered so I wrote an email. I got a call at 16h00 informing me a delivery address of an order cannot be changed. (The expected delivery date was Wednesday - why on earth can this change not be made with 4 days to spare?) The order was also being split up into 3 deliveries, all of which will be going to the incorrect address. The goods were being sent from the TAKEALOT warehouse - a mere 5 minutes away from the address I actually wanted the order to be delivered to. I even offered to go and collect the order from the Takealot warehouse to save Superbalist the INCREDIBLY DIFFICULT EXTRA EFFORT of not going to the airport to deliver to Johannesburg but to drive 5 minutes from the warehouse in Cape Town. But no people, we have found the one online retailer that does not offer the option to change a delivery address before an order has been dispatched. To add insult to injury, I then received a notification that items are out of stock. Why do I get a robot answer for a fixable problem?