Seeking Help PORT to BSNL but when trying to make call it says 'Service is currently not available please try after some time.'

[issu]

Few days back I ported my SIM from airtel postpaid to BSNL as that airtel sim was extra in my house. After, 7 days I insert the sim and when trying to call it's says 'Service is currently not available please try after some time.' Trying to recharge too but the recharge get cancelled.
HELP!

 

[raz]

Probably you need to activate it by making a verification call