State Bank Of India [SBI] — Refunded amount but does not credited in my bank account

My name is Prateek Kumar. I had ordered Milton Swiftron Stainless Steel Electric Lunch Box of Rs. 925 from Amazon on 09/02/2022 and on 15/02/2022 the order was delivered and paid via UPI and same day I returned this order due to quality issues and asked for refund in my SBI bank account. And on 16/02/2022 on which refund initiated. Amazon initiated the amount to my bank account but I still didn't get the money. Amazon sent this refund reference number[protected] and told me to fill charge dispute form but State Bank of India doesn't have such policy. My SBI account no. - [protected]
Registered mobile with bank- [protected]
registered mobile no. with amazon app account - [protected]
Amazon refund reference no[protected]
Almost 20 days are gone but no update. I am attaching product invoice, refund status screenshot.
So, please kindly respond to this complaint asap.