Online order black friday

I placed an online order for collection on Wednesday the 22nd November for 4 items, this was when their black friday specials went live. I received a call on Sunday the 26th November telling me that 2 of the items were out of stock and they needed to order more stock. At this point I was so frustrated, I asked then to cancel the whole thing and refund my account. The reason for this was besides waiting so long for a collection order, I actually went into the store on Saturday and everything was still in stock and instead of ordering online, which I thought would be easier and save me from the maddening crowds, I could have simply purchased everything in store. Now I simply do not understand how they could be out of stock seeing as I ordered when the sale started and there was still stock in-store on the Saturday. I have spent over R150k at the Makro Carnival since I moved to that area and if this is the type of service I receive and if my money is not valued there, I will take my business elsewhere. They can also be thanked for disappointing my child, as one of the items purchased was a swimming pool, which she will now have to wait longer for, as I don't know how long Makro plans on refunding me.