No service and no apologies

Went to the Mugg and Bean OR Tambo on Friday night (01/11/2019) after picking up my parents at the airport. We waited so long to get our order and then the waitress brings two peoples orders and the other orders only come after the two people have finished their meals. On top of this I ordered a vegan burger (chickpea) and sweet potato fries. They brought the wrong fries which I had to ask them to change and after biting into my burger, I realized this was a beef burger and not a chickpea as I had ordered. This is absolutely ridiculous. I am a vegan but ate beef because of pure incompetence. Spoke to the manager who did not seem very apologetic and just said they would make the right order. Then we get the bill and get charged extra for a side of sweet potato fries. We then queried this and the manager just gave us a look and went to change the bill. The service received was ridiculous and on top of that it is at the airport where you guys serve international guests . This is not the service I expected to receive. Utterly dissapointed.