The worst online shopping experience !!!

I ordered a few Sale items at Takealot.com, a complete order was sent out for delivery but to my surprise I received the wrong items (definitely someone else's order). I returned the wrong items to takealot, expecting of them to at least track my parcel and to deliver the correct ordered items but instead im being refunded and told to repurchase the items. But now I have to pay more money because the price for each item went up. Such an inconvenience. And to their defence, they are allowed to make human errors and they are unable to track parcels leaving the warehouse. Human errors now for the 4th time, human errors costing my time, money and major inconvenience. How can such a big company be so unorganised and not to mention such poor customer service.