Zomato — different food delivered

Address:

500047

I ordered food from one of the restaurants i ordered for one family pack chicken biryani. But they delivered me 2 mini biryanis. I seeked the support help and they said that they'll provide me credits. I asked them to take back the food. They refused to do so. I got totally different food and of less price. I asked for my extra money back. How do i pay more for an order.