Bank Of Baroda — refund not show in my account

Address: Ahmedabad, Gujarat, 380008

Refund of rs.165/- has been made by amazon on 26th December 2018 regarding a product (Order number is #[protected].
"the reference number of the refund is ref - 115310
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.
Pradeep K Mistry