Incredible connection not honoring their online pricing

Incredible connection advertised a PS4 with an additional controller for R3999 on 19 March 2020. I thought it was too good to be true so I called two stores to verify. I was told that j would need to order online and then collect instore. After making the purchase I called the call centre to check when the product would be available for collection. I was told that the online price was wrong and that they cannot honour the price that I paid. Last I checked the price that was advertised and paid for was the price that it should be given for. As a consumer I have rights and Incredible connection are violating those rights.