Airtel — unauthorized transaction on my hdfc credit card by www.airtel.in pgsi

This is in regard to the amount that was charged on my credit card on 11/06/2019 with transaction particular as www.airtel.in pgsi of rs.1237.85/-. This was unauthorized payment as i did not allow this transaction.

As per discussion with hdfc credit card customer care rep this was some sort of pre-approved payment but i never approved any transactions like that. I need this issue to be resolved asap and my amount to be refunded.

Pfa for the reference screenshot of my credit card statement for this transaction.

Note*: earlier smart pay was active for autobill payments of my airtel bill and later it was discontinued. I expected my card details to be removed from airtel system and it seems like airtel is making unauthorized transactions on this.

I am highly disappointed and this needs to be resolved asap. As i called airtel customer care and nothing was resolved.