Denied access to bathrooms at the Apartheid museum

We went to Gold Reef city today(14th June 2024).Our transport was parked near the Apartheid Museum.Around 15:00 I decided to go back to the bus because I was not feeling well(diarrhoea). When I got to the bus I really needed to use the bathroom but to my surprise I was not allowed to use bathrooms at the museum.The security guard told me to go back to Goldreef city regardless the fact that I needed to use that bathroom asap before I mess my pants.I went to the security guard at Goldreef City's entrance trying to explain my problem and that I could not go back inside because the bathrooms are too far.She also refused to assist.I even had to go to the nearest garage to ask for the bathroom.Because of that experience I don't think I will ever go back to that place,and the security guards have absolutely no idea about customer service and exceeding customers ' expectations.As well as the cashiers/receptionists at the museum.And it does not make sense to me,why do we still have places where people are denied access with lame excuses after 30yrs of democracy.