Rotten food

I have placed an order for burgers and chips. The chips are absolutely rotten and smelly. I threw up my entire meal. Worst fast food restaurant ever. How can they sell such ****. Most of all the manager has a disgusting attitude and insists there is nothing wrong with the chips. So then why is it stinking?????? Absolutely terrible service and support from such a horrible person who doesn't even know what it means to be a manager and make a customer happy instead he is rude and arrogant.....