I want to know if it is illegal to tell someone that you can only go to the bathroom on breaks and lunches

Csm Sky also had me working 6 to 7 days straight and they would override me I told them not to but they didn't listen and csm Sky told me I couldent use my discount card for family i live with my family and Sky and Earl our front end manager told me that I couldn't also Dorine our csm last year was in a snip when I accidently touched her and then she when on a tired after saying that was the most discuss thing she ever felt and that i was the most ugly thing ever and now i am so scared to look at someone that I am extremely fearful of what will happen next that I don't want to be to near to people that I am scared and I hope someone can help me I'm out of ideas I didn't know who to turn to I work at the Quakertown Walmart just letting you know