Airtel — free calling issue in prepaid recharge : [protected]

Address:

248007

My mobile no [protected], prepaid recharge for rs.179/-, which will expire today ie, 12 oct 2018.
With effect from 11 oct 2018, 6pm unlimited outgoing calls not rpt not connected with a remarks "unable to connect".

My point is that, before completion of date, always every time outgoing calls have been stopped, thus the reasons the respective customer like me, wants to change port due to bad services of airtel on urgent basis.