Unkind store leadership

I was so hurt and disappointed on Saturday evening when I went to Chelsea Spar in New Germany, within 5 minutes in the shop my son started complaining about his tummy, I could see that my child was in some kind of pain and quickly went and asked the security gentlemen to use the bathroom who then told me to ask the manager, at that time my son was getting worse. I went and asked the manager on duty and he flatly told me "the toilet is not for people like you, its for my staff". I told him I just want the toilet for my sick son (8yrs) and he just said "try next door". I had to drive home and unfortunately my son could not hold himself any longer and messed himself. We've been using this store from when my babies were two, now they 8 and we had to part ways with the store upon realizing that the management does not care about people.