Pizza Hut

well i ordered small pizza with just one topping extra cheese and i asked over the phone what the total was she said 16.14 plus an extra dollar for using debit when the man showed up it was 17.19 than charged me an extra dollar on top of that and after he left i noticed the bill and it said one topping pizza 7.99 and i was charged 9.49 so when i called back to ask them they said well you had two toppings double cheese i said double cheese is one topping they disagreed with me yet every pizza you order comes with cheese already on it so double cheese would be the cheese included plus and extra topping of cheese which would be one topping if you ordered a pepporoni pizza that would be a one topping pizza but there would still be cheese comes with it