Bank Of Baroda — refund of my order

Address: Nagpur, Maharashtra, 440022

I ordered a bluetooth speaker from amazon and after the poor performance i returned it. The product was received by amazon on 11th july abd after counting 5 working business days it has to be 18 july. I still have a pending refund from amazon india it is to be credited till 18 but it has not. They are saying that they have initiated refund and they mailed me the reference id which is i'm sharing with you so please help me out with this
Reference no is[protected]