Terrible customer service

I'm highly disappointed and I don't even know where to begin to tell my terrible experience with McDonalds at Centurion. So I placed an order online using Mcdelivery, mind you the reason why I ordered for delivery is because it was raining, cold and there was a power outage in my area and so I thought its a good day for me to make an order online, only for me to get the wrong order delivered to me. I told the uber driver that delivered my food that it was the wrong order. She was shocked because she said she told the employees at McDonalds Centurion to double check the order number if it's correct but instead they were careless and told her it is the correct order without checking. So now I had to get out of my warm bed and go with the Uber driver to McDonalds to fetch the right order because I had to show them proof of the order details in my phone as the driver didn't have any of that on her end. I was very upset with how they handled the situation when we got there. The employees were rude the manager didnt even empathise with us and apologise about what happened instead when I explained how upset I was he just looked at me like I'm crazy. McDonalds Centurion needs to train their staff when it comes to customer service. This was the worst service I've ever received in my entire existence. You guys need to do better, I'm extremely livid and disgusted, I could vomit. The uber driver that drove me to McDonalds to go fetch the correct order was not even compensated instead the manager was busy arguing with her. They failed to understand that they were in the wrong and did not even care a damn to apologise. What an ********* and unprofessional manager!!