Order gone wrong, service no better

I placed an online order on Wednesday, 30/05/024 for delivery from Steers Zevenwacht. When it was delivered, half my order was missing and when I noticed I immediately contacted the store.

- One of the milkshakes was the wrong flavor. - Of the 4 burgers, one of them had nothing on it, it was just a sliced bun (image attached). - There were no mini loaves.

Initially I spoke to "George", who assured me he'd call me back and everything will be sorted within the next 20min. I called over an hour later and I was told George isn't there but they would ask him to call me back, but he never did. Another hour later, (in total, 2hours now), I called again and the call was declined 3 times, before I got through to customer service, where I spoke to Moses, who was very sincere, and even though I vented with him, still apologised and assured me that the matter would be escalated. He even called me back about half an hour later to check in if anyone had gotten back to me yet, which no one did.

Yesterday I tried calling the store again, and spoke to a lady, "Avrol/Avril". She said no one by the name George works there, but she the pulled a "George-stunt", promising to call me back, but never did.

At this point, I have no faith in Steers as this is the 3rd time in just under a year where I've had bad experiences with either the service or the food.