Disappointed and never going back

I went to Chloorkop Sasol Garage and the supervisor on duty Michael Rathlokwa said I was not allowed to purchase anything in the store since I didn't want to use their sanitizer. I asked him what was in their sanitizer as I have allergies and he couldn't answer me. I showed him my own sanitizer that I used when I entered the store which is 70% alcohol based and he said maam we will not scan your items because head office said customers must use sanitizer provided by them. I left my items at the counter and left. I'm not gonna put myself at risk. It really doesn't sense that at other stores or petrol stations don't have a problem with people using their own sanitizers but this garage has a problem.