Worst experience with Checkers 60

Where can I post screenshots for everyone to see? I was trying to place a Checkers 60 order. I came across a promotion which said if you purchase two products you receive 20% off. I added the two products however the discount was not deducted. I tried a few times and I even clicked the promotion banner under the product and it took me to a page with all the products under this promotion and I found the product there and tried again but still no discount app**** in my basket. I called customer service and the agent tried to assist me, she understood the issue and after she checked she said this product is not part of the promotion hence why it’s not applying the discount. She said she would speak with her manager to rectify this error on the app and see if they would be able to honor the price. I emailed her the screenshots and I waited. Keep in mind that I needed to place my grocery order to get my groceries in time to prepare supper before loadshedding and the store would be closing within 2 hours. After quite a while she eventually emailed me stating that they do not want to honor the price as it was an app error and due to the price of the item (R45 - I don’t see how this price would be an issue?). I did not have time to try get further assistance and I placed my order without those products. There was a further issue with my shopping when one of my items AND the alternative were both not available and this was the main item I needed. Another item was part of a bundle of buy 2 and get a third free, I selected 3 of the variants I wanted but there was only 2 available and I was promoted to select an alternative for the 1 unavailable item which just messed up the whole bundle deal. To add to all this, it took around half an hour or maybe longer before they even began shopping for my order and I received a message on WhatsApp stating that my order is running late. I obviously did not get my shopping in time for loadshedding so this shop was not worth the aggravation. I faced so many issues with this 1 transaction and it has been the worst experience ever.