To disable the service "Live balance", as well as many other services in MegaFon, through a self-service system "Service-Guide" on the official website of "MegaFon" at To log in you will need the password which can be received from the service team. Enter from your mobile phone *105*00# and press the call key. You will be sent an SMS with a password to access the "Service Guide".
If you are not used to managing services via the Internet, you just type on your mobile *134*2# and press the call key. The service will be immediately disabled.
You can also disable the service "live balance" by dialing 0500 customer service of "MegaFon". In this case, be prepared to provide the operator with your passport details.