Andhra Bank — Didnt refund the debited money

Address:

Faridabad, Haryana

I made a online payment of rs 359 to flipkart. While i was making the payment payment was unsuccessful and the reason was that "Your bank declined the payment" but the money was debited from the account. I talked to the flipkart customer care and they said that they have received no payment from the bank and said if the money is debited it will be credited in the account by your bank within 7 days. Its about 20days i didnt received my money. I mailed them about my problem but there was no heed on this and its about 4 days