Airtel — amount deducted from bank but failed bill payment with airtel company

Address:

600122

Dear team,

I have made airtel online prepaid recharge on 29th sep 2018 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. Request your help.

I just want to resolve this issue as soon as possible.
Or else i will change my number to some other service