Airtel — amount deducted from hdfc but dth recharge unsuccessful

Amount deducted from bank but failed bill payment with airtel. Dear, i have made airtel online post paid bill payment on 5th may, 2020. Amount got deducted from hdfc bank. Payment successfully. Money deducted from my hdfc bank. But from airtel side they said money not reached them. And the transaction has failed. I have not received any refund to my bank after that. They have disconnected my dth for non payment of recharge. Details are mentioned below:
Bank : hdfc
Narration: [protected]-citrusairtel
Ref no. :[protected]
Dated: 5 may 2020
Amount : rs.340.00
Kindly look on to the issue and resolve it asap.
Thanks rahul