State Bank Of India [SBI] — not showing the refund in my account

A refund of rs.321 was successfully issued on sep 3, 2019 and received by the bank on sep 13, 2019, sent by amazon. This amount should have been credited to my sbi account by now, but i have not received the refund till now.

I have called the state bank of india customer service, visited my branch and also emailed the state bank of india all the details many times including the unique transaction reference number but no action has been taken.

I have confirmed with amazon and they have successfully processed the refund

Kindly go through the charge dispute emails, locate the pending refund and follow the path back to amazon's payment processor to locate the refund.

My refund referance number: #[protected]