A very bad online service from Makro

On the 24th November 2023 I placed an online order with Makro taking advantage of the Black Friday special, the purchase was successful with no indication of out of stock on all my items, my money was debited to Makro, confirmation was received to confirm the order, then on the 27th November 2023 the employee from Makro called in to inform me that they can't deliver because my item was out of stock and they'll therefore cancel my order, I told the lady to keep my order until they have stock because I don't mind waiting, but she insisted that they'll cancel it, they indeed cancelled my order because they feel they can do what ever suits them disregarding good customer service and the rights of a consumer. I sent a complaint to them about the issue, they just gave an apology blaming their systems, the question is whose fault is it if their system is not working well?they have inconvenienced me because I forfeited the saving I had made, if their systems were good I would have bought from other stores.I want the whole matter ratified, I can't be paying for makro's system errors. It's very disappointing to see so many complaints in this platform about Makro's bad online service, what are they doing about it,? I am now here on hello Peter because they are now quite not responding, what a ridiculous service!!!