Bank Of Baroda — refund process

Address: chandni chowk tripoliya gate, Ratlam, Madhya Pradesh, 457001

Refund of rs. 11690/- has been made by amazon on 27th of march 2019 regarding a product (Order number is #[protected].
"the reference number of the refund is ref - 75503729087028176170095.
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.