To connect or disconnect the service "Black list" you can in any convenient way. To connect, you can send USSD-request to number *130# to call at 0500 in the reference service or to send an SMS without text to number 5130. In response to your request you will receive the first message that the service has been ordered, and then that "Black list" connected. And only after that you will be able to add numbers to the list or remove them from it.
To add any numbers to the list you must dial *130*+79XXXXXXXXX# and press the call key; you can also send a request message with the text "+" and the number of the desired subscriber (please specify format 79xxxxxxxx). To delete a number you can also dial *130*079XXXXXXXXX# or send SMS with the sign "-" and number. View the complete list of numbers listed in the "Black list", you can use query dial *130*3# or SMS messages containing the text "INF" and sent the number 5130. To delete a single number, and all start typing your mobile number *130*6#. To disconnect service "Black list" by using SMS command "OFF" on 5130 or USSD-command *130*4#.
It should be noted also that when the service is activated (the first time) by Information service your account will be debited in the amount of 15 rubles, and reactivation - 10 rubles. Monthly fee is 10 rubles. Disabling the "Black list" is free. Managed through a self-service system "Service-Guide".