Dear friend, Please try this .
Go to SIM Services menu, in BSNL BUZZ go to Activation menu and select Deactivate to deactivate the service. You can reactivate the service at any time by going in to BSNL BUZZ select Activation option and select Activate.
Go to SIM Services menu, in BSNL BUZZ go to Activation menu and select Deactivate to deactivate the service. You can reactivate the service at any time by going in to BSNL BUZZ select Activation option and select Activate.