Amazon India — Did not get refund even after returning an item

Address:	411057
Website:	amazon.in

First of all when I decided to return the item amazon did come to pick it they ask me to ship it from my end. I paid shipping charges and sent the item by first flight courier. I contacted amazon and gave a copy of receipt long back. After a month they ask me to send the receipt again. I contacted amazon end number of time did not get any help. I am fed up contacting amazon just for 1000 buks.