Airtel — recharge failed , money deducted

Address:

500084

Money debited from my bank account, recharge was unsuccessful
Money has been deducted from my bank account while recharging through Airtel app, recharge was unsuccessful and money has been deducted from my account.
There are around 2 transaction that got failed and money was deducted and not credited back to my account.while talking to customer care the answer is simple it's from bank and Money will be reverted within 7 days.same thing with bank it's Airtel app problem.
It's worst app. It's been a month and I almost lost 300₹