Airtel — online recharge failing for prepaid mobile number

I am unable to recharge my airtel prepaid number [protected] through online using airtel app or paytm.
Money is deducted but getting message as below.

Rs.49.0 online recharge of airtel mobile [protected]; txn id xxxxx has failed due to a technical issue. Refund will be processed within 7 working days.

I am facing this problem since so many days but some how managed getting recharged from recharge shops. But now due to lockdown situation there is no other way than recharging online. Please do the needful at the earliest.

Thanks in advance