Worst online shopping experience

I purchased items to the value of around R5000 online (Sportscene) on Saturday, on Monday they sent an email saying my order was with the courier awaiting delivery. Yesterday they sent me a string of emails about how they could not locate some of the items I had bought, saying they could only find 3 items from their stores. Today I receive my and it’s only 1 item. Now I have to wait for them to call me and let me know when I can get money. Why would you advertise something you don’t have in your stores? Out of 6 items you could only find 1? How when the order went through?