Dollar General complaint: Discrimination

To whom it concerns;

Hello, my name is Antonio Stanford, I was recently at store (22920) in Sylvania Ohio picking up stuff for home. As I politely asked to use the restroom, Amour, the cashier, advised me that I was not allowed to use the restroom. I continue to shop, and as I was checking out, asked if this was a store policy. She stated that it was, as I know for a fact it is not. I have been to several Dollar General stores, and have never been denied the opportunity to use the facilities if needed. I went on to ask where in the policy is this policy at, which she could not provide.

I want this young lady to have cultural diversity class at the very minimum as I know I only was told no due to my race and gender. I have never been so humiliated in my life. I had to use the faculties across the street as this lady refused to allow me. If this is so, there should be a sign stating this, and this should be a common practice in all dollar general stores. Please address this issue. Thank you!
Antonio