Corporation Bank — Refund not credited into account

Address:

Chennai, Tamil Nadu, 630002

Account number: 005-SB01021450

I ordered a product from Flipkart by paying with corp debit card on 26th Jan and later returned it. The refund of amount which was processed by flipkart on 4th february. But I didn't get the refund amount of Rs. 839 till now. I contacted my branch- George Town, Chennai. They said no such amount has come to my account. The reference number given by flipkart is 74766517035704666098056.

I've sent a mail to customer care mail id. No response till now.

Please do the needful and credit the amount in my account as early as possible.