Airtel — money debited recharge unsuccessful

Address: House no 34,Charles Villa,gonsalves street,vile parle East Mumba, Mumbai City, Maharashtra, 400057

I had done a recharge of rs 199 on 22nd december 2019 money got debited from my bank account but recharge was unsuccessful
The same happened today ie 19th january 2020 i did a recharge from the mobile app once again as the option was featuring on the airtel app but recharge was unsuccessful money got debited from my account

I would need a detailed explanation from the airtel company as to why do they provide the recharge amount on the airtel app when the recharge does not exsist

Also request to transfer the money back into my account for both the unsuccessful recharges that was debited

Regards
Marilyn gonsalves