Amazon India — regarding refund the amount

Address:

Muzaffarpur, Bihar, 842002

Hello sir
I am just writing this because i placed an order with amazon and i got my product on time but when i saw it was not good as i expected and it was damaged product. What happend next when i am calling them they are denying to refund the amount they are saying i can only give you my own card which is (Amazon card) that only can use on amazon only. I paid the amount in cash because i dont have bank account and now they are denying to return my money. Just requesting you to help me in this and please find the below mentioned details that i made with amazon india.
Amount i paid : 800.00rs
Contact number : +91 [protected], [protected]
Email address :[protected]@gmail.com