Bank Of Baroda — I am complaining about amazon refund

Address: Mumbai City, Maharashtra, 400008

Refund of rs. 849/- has been made by amazon on 30 of sep 2019 regarding a product (Order number is #[protected].
"the refund reference is # 0rzv1aaw0000k0p2jgdi for your refund for order no[protected]."
But, the refund has not been received yet.
Bank is saying no amount has been received by them. I've talked to them again and again but no responss is coming. So i need to file a"charge dispute" on them, to get the full details.
I need bank to resolve this issue as soon as possible or i'm gonna take some legal action.