Amazon India — amazon refund not credited to my account

Address:

632107

I have purchased zenheiser from amazon by making payment of 808 through indian bank debit card. I have returned the item and amazon initiated refund with refund reference number[protected]. I visited branch for solution and they said to file pos. When i contacted amazon, they requested to file charge dispute with indian bank customer care. But indian bank customer care executives denying the existence of such form/facility. It is not about money but about the customer services offered by bank.