Amazon India — I haven't received my refund amount from amazon

Address:

71-31-645-a krantinagar Visakhapatnam Andhrapradesh 530011

I ordered a Lime sets of 2 solids Chinese band collar t-shirts for Rs. 549 on 11.07.2022 by cash on delivery and then I returned my order after receiving it because of some reasons and they initiate my refund but didn't recieved in my bank account till yet. I talk both to bank and Amazon customer care but it didn't work.
Kindly please help me in getting my refund.
Refund reference number[protected]