Dmart Ready — Double Debit happened for a single bill

Hi Team,
My order no[protected], of amount 2494 has been debited twice through DMART ready center, one of your employee said that the transaction failed at your end but at my end it was successful, so he has asked us to transact again so I have transacted through UPI.
He said that money will be credited in 7 working day's but even after 10 days it did not, i complained many times but got no help, each of your employee kept saying that your money will be reversed in 4 day s still it did not, till now it's been more than 1 month I did not get any reversal of amount, please help.