McDonald's

I went to this location to order and the girl taking my order ask me if I want my meals Medium or Large l, I told her regular size and she keeps asking me and going back and forth about the size and I keep telling her just regular size( regular size it's what it's on the menue) finally I went to the window and she was rude and repeat part of my order and again mention the medium size drinks, when I look at my receipt she took my order wrong so on the second window I ask for the Manager her name is Kenia or at least that's how she pronounced it. I told her what happens, she repeat my order then she said that I told her that she charge me wrong, which that's not what I said. I told her that's not what I said I said she got the order wrong and I was missing stuff. She grab the bag, I don't know what she did but I hear her telling the girl at the window on a bad way to give me the bag and that she give me the extra fries. The way she say it was rude and she didn't even came to me to give me my order and to apologize for the rudeness of the girl that took my order. She send someone else when I can hear what she said.