Rude staff member

I went to buy then I sat down waited for my order, when my order was ready I went to the counter then I tried giving my ticket to the lady who was issuing orders she then ignored me instead took ticket to people behind me I den become angry and asked why is she doing that she then went to take the pizza den threw at me infront of the staff and the customer other customers were also asking y is she throwing pizza as if I am a dog, am so disappointed and I will never set my foot at debonair