Giant Food Stores complaint: Turned away

In October 2021 I visit the food giant in king of Prussia. It was approximately 7:30 in the evening. To purchase my items I used a government issued access card. Because I had this card for many years it did not work. And usually the teller would manually put the numbers in and it would go through. Well this night the manager on call was rude and said that no longer were they putting numbers in manually. Which was untrue. I left the store with nothing to eat that evening. My son’s girlfriend went to the same store an hour later and because she was white using the same card they accepted it and put the numbers in manually. I ve wrote you, I called you, I even spoke with your staff and still you’ve done nothing. I am permanently disabled and suffer many problems. And I can’t believe that this type of behavior still exsist.
I have called the BBB, and because of the refusal to respond to my messages. I will call the disability board, and the government whom issues these cards to find out why I had to be disrespected. I find it hard to believe that you wouldn’t respond to a issue like this. Maybe I should seek legal advice and make sure that the media becomes inform on such things.