Makro not treating customers fairly based on the Customer Protection Act principles.

Makro advertised Online that they are selling 24 x 80g Cadbury chocolates for R149.00 were I placed an order for 2 x boxes of these for household consumption. The payment went through successful. Later on the listing was listed out of stock were I received a called from *** on sat 12:35pm stipulating that their was actually an error with the advertising and they are contacting customers to inform them. This is totally against the customer protect act as their is sufficient stock. Should Makro fail to provide me with the item, I will then escalate to via the ICASA website and log a formal complaint due to this being against the Customer Protection Act(CPA). This is really causing distress and inconvenience as I am having endless problems with Makro and being treated unfairly. I was not in agreement with the refund yet I just received an email few minutes ago saying their is no stock yet the probability of me walking into a Makro tomorrow and seeing stock on their shelves are most likely.