Reliance Trends — amount deducted from debit card. but declined by your system. no refund

I had purchased shirt worth rs. 702 from reliance trends, shobha city mall, thrissur, kerala on april 22. I paid the amount by debit card and the cash was deducted from my account but declined by your system. Upon asking, the department manager said it will be resolved by 24 hours, said that i have to amke another payment of 702 to keep the dress. It has been 3 days since, there is no refund. Called your department manager, but no response. Kindly. Make the refund as soon as possible