Unprofessional, zero customer service

Yesterday morning the 13th of November 2019, I placed an online purchase at Makro store for collection at their Woodmead branch. I ordered head n shoulders shampoo and a case of sparkling wine, the total to pay at checkout screen was only the fee for the shampoo and it showed me I SAVED the amount for the sparkling wine (which it showed as a Promotion). I then made the payment and waited to collect my order when order confirmation from the store was received. Same day in the afternoon I received an sms confirmation my order my ready for collection at the Woodmead branch. And this morning I received two emails with the invoices, confirming my order and that it was ready for collection.

I get to the store today afternoon to collect and they tell me they cannot dispatch the order because they were told by the head office not to. I then requested for an explanation and they couldn’t tell, they then called their supervisor David Twala (Business Development Manager) who explained that apparently there was a system error, the promotion was not correct. I as a customer dropped everything I was doing to collect my order today as it was the only time I’d have this week, the food manager who’s also the store manager Charles Khoza was very disrespectful in explaining anything. He did not apologize about anything as the store, he continued to disrespect me and said that it was common sense that it was an error with the system.

I'm very upset as a consumer and feel that I was not respected and considered as per the consumer protection act. I am lodging this complaint as an upset customer who seeks justice. The system error was not my fault or problem, I wasted my time to go to the store. As a customer I feel it wasn't fair for Makro not to fulfill my order because of a system error on their side. I feel they should have taken the loss as a store to fulfill the customer's orders and then deal with the error at their own time.