Amazon India — Refund initiated but not credited in my bank account.

My name is Tanu Singh. My bank account no. Of central bank of India is - [protected].
From Amazon 15/3/2021 My refund of 411 RS initiated and the side of amazon successfully processed my refund and they provide me to a refund refrence no the refund refrence no is[protected], regarding this issue i already complaint in the bank of my city. yet my refund is not credited in my account please initiate my refund.. i attached the proof of my refund from amazon.. i attached the screenshot of the refund confirmation mail with refund refrence no... Please solve my query.