Airtel — Airtel DTH recharge failed but charged

Address:

Chennai, Tamil Nadu

I recharged my Airtel DTH account for ₹ 330/- using my credit card on 9th Sep 2021 and got. Transaction Failed msg. However my Card company said Airtel settled the transaction on 10th Sep.
On the same day I recharged DTH again through NetBanking.
However until now the Failed Charge amount does not appear on Airtel account and has not been refunded either