Pizza Hut India — incorrect billing

Ordered a pizza from the andheri east store.
First they send a handwritten bill.
We had ordered a tandoori paneer medium and a veggie supreme medium, the prices of both listed on the website are attached.

They had overpriced both the pizzas and also the garlic bread in the handwritten bill.
Upon pointing out they said, this is always the case that the in store rates are different than the website rates.
When i asked them to send me a system punched bill, they refused saying system is not working and if i do not want to pay the said amount i can return the pizza.
I told them i will pay whats on the website, and not the inflated amount on the hand written bill, or i will pay the amount of the handwritten bill only of i get a system generated bill.