Stomach bug

I went to pick n pay Braamfontein on Tuesday(22 October 2019)and bought sorghum pap, chicken livers and spinach. My colleagues and I fell sick hours later after eating the food, we went to Report this the following morning however, we were disrespected by the manager(Maria) who told us to go and consult the doctor we can't just assume it's their food however everyone who had that spinach in my department had a stomach bug and didn't come to work on the 23rd. I had to make my home made drip because of the diarrhea and still suffering from it. I had to buy adco-loperamide and mayogel. It's not the first time this happens and we always get the same response. We were told they can only take this matter serious once 20 people come to complain.