Bad customer service

I went through a drive thru and when I got to the last window where I only placed my order,I was helped by the lady called Boitumelo. She told me with attitude that she doesn't have a speed point since I was paying with a card and said I must drive around to the front. I asked her what's the point of doing the drive thru exercise when they don't even notify us before hand that we can't pay by card (by a note on drive thru entry). She told me that she's busy with dishes and I am wasting her time, which I didn't understand why that is my business. Since I wanted the breakfast, I drove around and ordered breakfast with chicken patty, only to find out when I opened the food along the way, it was hash brown not chicken patty as I asked. I find the whole thing unacceptable. And for the fact that she continued arguing with me even after I drove to the front and went into the store to place an order, while other staff members looked and not even reprimand her. What makes me angry is that this is not the first time. Customer service at that store is very bad as compared to other KFCs. I wish it get closed. Tired of logging complaints.Very annoyed.