Magicpin — I ordered family pack biryani, they delivered single biryani

Address:

2 2 1109 b Ramakrishna huts, Amberpet, Hyderabad.

I ordered family pack biryani in Royal Biryani and Kabab and Juice Center online in Magic Pin. They delivered me single biryani. I contacted them, they are rejecting my calls, I contacted chat support they are processing me refund of 175 out of 420. I said I want full refund. Even the chat support closed my chat. The voice team called me and said the merchant is denying to pay the full amount. If merchant is denying it is not my fault. It was his fault who delivered the item which doesn't even cost 100 rupees and just denying to pay full amount. It completely shows how they are doing fraud. Even the voice team cut my call in middle. I want full refund. I don't want this item. It is still unopened.