Corporation Bank — refund amount is not credited in account

Address:

Powai Naka Satara, Satara, Maharashtra, 415001

Hello sir
I purchased a pendrive on amazon and paid full amount of 339 rs. But the product was lost in transit from amazon itself. So they initiated refund against it. The amount is successfully completed by amazon but it have not retrieved in my bank account. The customer relation person from corporation bank stated to lodgr complaint in my bank. What should i do??

Reference no. Of refund from amazon[protected]