Bank Of India — refund from amazon not received

Myself jesintha, ordered a kurthi of rs.599 in amazon and returned the product on 30/10/19. The refund amount was initiated by amazon on 30/10/19. But it did not reflect in my bank account til date. The reference id given by amazon is : 1uju9hk60000k1rmpuze. Amazon requested to contact the bank's customer care if not credited within 4 days from the date of refund.
Kindly take further action to make this as soon as possible.
Thank you.