South Indian Bank [Sib] — Not received my refund given by Amazon.com

My name is Akshat upadhyay I had ordered Freacksters Men's Chelsea Boots of Rs. 1849 from Amazon on 15/02/2022 and on 18/02/2022 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 19/02/2022 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]
Oder I'd[protected]
Amazon refund reference no[protected]
Almost 60 days are gone but no update.
So, please kindly respond to this complaint asap.