Amazon India — refund for order[protected] not issued

I ordered few groceries ide order[protected]. The courier company damaged the package and package was not delivered. I was informed that refund issued on 14aug. After contacting them, i was told to wait. On 21st, i was told to wait for 1 week. On 28th, i was told to wait 72 hours. I did and now no response, they are simply saying that it is stuck with the bank. No proper answer and even after 18 days, there is no communication from amazon. With this i demand amazon to immediately credit refund and extend my prime membership for the time that amazon delayed my refund.

Hemant l.