Airtel — Recharge refund not done

Dear Sir/Madam,

On 02/06/2020 I have recharged my mobile no [protected]. The amount got deducted from my Credit Card but the recharge was not successful. I have contacted the customer care service on 198 and they have intimated that they can see that there was an recharge of Rs. 349/- but that was not successful. They have asked me to wait for two hours and guided that if it is not reflecting then make a fresh recharge. The amount will returned back by 7 days. I have done second recharge of same amount on the same day accordingly. But till date my amount of first recharge which was not successful is not returned back to me.
Kindly resolve the issue on priority basis.