Indian Bank — refund not been credited to my account

Address:

Mumbai City, Maharashtra, 400058

The refund amount of rs.6999 from amazon hadbeen done from there side. Kindly check the refund from your end fromthe unproceesd refund, and revet me back as soon as posssible. I have cancelled an order from amazon on 19/12/2019 and recieved an email from amazon that the refund has been processed succesfully and it would be reflected by 23/12/2019 ie between 3-5 business days, but still i have not recieved the money. When i spoke with an amazon associate he said i have to fill a "charge dispute form" bcause it could be a problem at my bank side. I also contacted my banks customer care many a time but they say that problem could only be resolved by visiting my branch.
My refund reference number is : (Protected)