No so good at Romans Pizza Lambton Germiston

I have always supported Romans Pizza until myself and my family got sick. I thought maybe it was something we ate before eating the pizza. Today 09/08/2018 we ordered pizza again from Romans pizza in Lambton Germiston and surprise we all got sick again with running tummy's and stomach cramps. I am really concerned for health issues as this is now the second time we got sick eating pizza from Romans pizza Lambton Germiston. I would like this matter to be investigated and an explanation on this matter.