Indian Bank — amazon refund not processed by indian bank

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Hello, my name is amol sood.
I placed an order on amazon on 3rd march, 2019 and immediately cancelled it. Amount was 615 rs. Paid by my indian bank debit card. For refund of payment made, i received the following message from amazon (Appended below). As on 12th march 2019, i have still not received my refund in my bank account. So i contacted indian bank customer care as directed. But when i contacted indian bank customer care about the same, they said they can't help me and i should approach the seller (Amazon) again. Amazon customer care again told me that i should register it as 'charge dispute transaction' with indian bank, so i again contacted my bank's customer care who told me that i can't register this dispute with them as it is a problem on the seller's side and they can't do anything.
My problem is still not resolved as i have not received my refund. Kindly help.

"hello,

Your refund of rs.615.62 has been processed successfully on[protected]. The amount should reflect in your account by[protected].

The authorization code (Refund reference number) for the transaction is[protected].

In case you do not receive the refund within 5 business days, please contact your bank’s customer care and mention the above authorization code (Refund reference number). Please remember that you will have to call your bank’s customer care center and not visit the branch for this query.

Some nationalized banks may take more time than usual to credit the refund. If your bank is unable to locate the refund with the authorization code provided, please dispute the transaction as 'refund not processed'. On disputing the transaction, the bank will see a pending refund and will follow the path back to our payment processor to locate the refund.

Hope this helps. Thank you for choosing amazon."