Save some time and rather make a trip to the store

OneCart used to be great but I stopped using them in 2021 after a few bad experiences. I figured they could use another chance and after coming down with a cold, I ordered some medicine using their App. I picked a delivery slot of 09:00-10:00 and planned my schedule around it.

At 10:00, nothing had happened on the order so I tried to cancel it. As soon as I pressed ‘Cancel order’ an error popped up and I saw shopping had begun. At 10:05, I got a message saying shopping had been completed and that it would be with a driver shortly. At 10:45 I still had not received my order so I contacted the call centre who advised me that they had changed my delivery slot to 10:00-11:00 (without informing me) to allow the shopper more time. I asked why there was then a 09:00-10:00 slot on the App and was ignored before being told my order was on its way. At 11:40 I called the call centre again who gave me a different excuse for why the order was late. The order finally arrived at 12:15.

How has this been going on for years and nothing has been done to improve?