How Takealot ruined Christmas for my Grandchildren

I ordered Christmas gifts for my 5 year old and 2 year old grandchildren as well as my daughter, their Mother on 16 December and made sure that everything I ordered was in stock in Cape Town so there would be no delays in delivery. Delivery was confirmed on 23 December. That date did not change on the app but come the 23rd December the items still showed not yet shipped so I called Takealot customer care to find out what the delay was. Apparently one of the items I ordered was not in stock and was holding up the whole order. Takealot put the blaim on me for not phoning to split the order well how was I supposed to know that something that was in stock when I ordered it was suddenly not in stock anymore. Now the delivery date has changed to 29th December. How am I supposed to tell my Grandchildren that they won't have any Christmas gifts on Christmas morning 😞and all they can say is sorry for the inconveniences 😡