Humiliated and disgraced at Randburg McDonald's

First of all there are no signs stating "NO GOWNS ALLOWED". I wanted to buy a coffee because Randburg was in loadshedding. I had a busy week and woke up 21 May 2022 on Saturday craving some coffee. The drive thru was very long and I was cold. I decided to go in to just buy the coffee when Annah, the McDonald's employee tells me that she can't serve me coz I am wearing a gown. Then she proceeds to come from behind the counter to point me to the door. This is the most humiliating experience that I have ever received from any business.