Waiting for almost 40mins I a DRIVE THRU

Thought I could catch a quick breakfast crunch wrap before work, landed up at KFC in fordsburg (the one at the engen garage) tried to place an order and always told to go the the last window as the machine is not working, stand in line waiting there was 2 cars in front of me, finally got the window and to my surprise the lady taking my order did not even attempt to apologize for the wait, she just took my order and then when I presented my card to pay she told me that I needed to get out of my car and come inside, so from a drive thru I had to get out of my car go inside to pay walk back out and wait for my food, when my food eventually came, I checked to make sure everything was there (2 brekkie crunch wraps and to cappuccinos) I was told that Can I have your order back so I asked why and was informed that they forgot the zinger sauce which I explicitly asked for I quantico be surprised if they had forgotten the hasbrown also requested, it was at that point that I told them to take the food back and refund my money as I am late for work and they didn’t even have the decency to mention a simple sorry, I am appalled at the service that I receive at KFC branches as this is not the 1st time his has happened and I’m sure it won’t be the last.