Pizza Hut - Food quality issue

I ordered two medium pizzas on **th march , the order was first of all late after that I ate like half of one medium pizza and I fell severly ill the very next day, The whole day previously I ahd not eaten anything that was from the outside except the pizza that I ordered at night. I got diarrhoea, and had to go to the hospital. Since two days I am suffering and the store did not take any responsibility nor did they say that we would refund your money.