SBI — Refund

I purchased a product from amazon and returned as i received wrong product. Amazon sent refund amount to my bank account, but i didn't received my refund amount, i called to amazon for my refund amound they sent me reflect details, den i called to my bank to ask them about my refund amount due bank manager is saying they can't help me in getting my refund it's fault from amazon but not from bank side said manager, i said him that i have reference no of my refund but he declined saying them can't refund amount n cnt help me get my refund,

This is to confirm that refund for amount 455.60 has been successfully processed on[protected] and the amount should reflect in your account by now.

Refund reference # 969726
This is my refund details sent by amazon. Please help me out to get my
Refund amount.