Airtel — service provider not providing service despite of payment done earlier

Address:

342001

I recharged my phone having number [protected] with Rs 348 for unlimited calls and 1 GB per day data for 28 days on 2 Aug 2017, despite of such recharge, from today morning my calls are not been able to be placed in which the service provider says that the account balance is low.
that despite of all payment still i am not been able to place calls.