McDonald’s complaint: Incorrect Charge, Refusal to Correct It

I placed my order for a Sausage McMuffin and Hash Brown and an additional Hash Brown. The order taker said 4.71. I pulled around to the first window and the same person who took my order said 6.27. I said it’s supposed to be 4.71 for Sausage McMuffin and Hash Brown Bundle and an extra hash brown. You just told me 4.71. She just looked at me and repeated 6.27. I said fine. I pulled up to the second window and ed the order was correct with the girl who was going to give it to me. I told her I was charged the incorrect amount, she just stood there with her mouth open and the bag in her hand and looked at me, clearly having no clue what to do. At this point I wasn’t going to refuse the food I had just overpaid for so I took my food and left. I said to the clueless girl at window 2, I am NOT happy.
Now here’s the scoop. The person at window one should have queried me and corrected HER error and we all could have gone about our day but when she challenged me and didn’t believe me all she would have had to do is figure out the correct cost and charge me that amount.
The error could have been easily corrected at Window 1 but I am guessing now that I am not the only person with a wrong order andor incorrect charge. I didn’t include a photo of the error because I wasn’t offered a receipt.
I am a daily customer and any errors in the past have been tiny and not bothered about but this particular order taker was way out of line today and I am very angry; this is not the way I wanted to begin my work day. I will now have to go to a different place for my food in the morning because I expect retaliation from this individual based on her total denial of HER error.