Airtel — money deducted twice but not refunded

Dear sir/madam,
I have recharged my airtel no at 09:54 am with rs.509, but it is observed that the transaction was initiated and further no message o[censored]nsuccessful or successful transaction was reported. Considering first net banking transaction to be a failure, i recharged second time with rs.509 at 10:46 am and it was successful but the issue here is that the money got deducted on first transaction as well as for the second transaction. I have both transaction id for reference and kindly refund the amount rs.509 at the earliest.