My cat loved friskies but sinced it changed to pampers he won't eat it

I have a seven year old cat that only eat friskies an whiskies. Since friskies Changed their name .to pampers my cat refused toe eat he's food. Normally het can't..wait to eat and now hy stares at the bowl and asks for other food. When feed him out of my hand he eats a little bit but then he vomits. So i have a four kg bag of food that my cat won't eat and no money to buy another bag of whiskys. Thats the only other food he would. Please tell me what can i do.