Macdonald's Boardwalk Mall

Ordered a Chicken Big Mac large meal with a large orange juice for delivery. My order was wrong so I drove to the Macdonald's and went to the counter. The lady first said to me I must wait 10min and then came back and said I must go around the corner to the Uber section at the side of Macdonald's. When I got in there it was so disgustingly dirty and it took 10min for one of the Uber drivers to have to eventually tell the Macdonald's worker to help me. The employee then told the Uber no he will help me when he is done with the Ubers orders. Another 10min he eventually came to me. He was then very unprofessional and unfriendly. Once I explained my problem (My orange juice was apple juice in two small cups and my large chips were filled half way, and instead of a Chicken Big Mac they had given me a regular Big Mac) I asked the employee if I could now go wait inside Macdonalds where customers are supposed the be and he told me no I must wait inside of that narrow dirty room with no space and Uber drivers on top of me because that's where deliveries go. I then waited 10min minutes eventually getting very uncomfortable as a customer and went inside where he noticed me clearly and made a sly remark of "Oh you there now". I am honestly digested in the way I was treated as a customer and the manners of the employees and the hygiene of the store. I would like to hear back from a Manager about this as I have never in my life been treated in such a way.