Amazon India — Refund balance didnt get

Address:

india

I have returned my noise air buds on 31 october 2021. but i didn’t get my refund amount till now . the amount has been initiated by Amazon on 7 sept 2021 but till now i didn’t get . they gave me a refund reference number 455998.
i visited the bank but they are not cooperating with me . i called many times to state bank of india customer care but they also not able to help.
so please help if possible to recovtmy refund amount.