Charging money for unused service

Fell in a similar way.
First, in support of MegaFon, then the society for the protection of the rights of consumers (here: ozpp.ru). If the matter is resolved in court.

Slightly raise your question, because now this situation is relevant. I had a similar situation with a Megaphone, I have somewhere in the 100-150 rubles a day, as called tech support and I was told that everything is shut off and the next day again the money goes. Started looking for a solution on the Internet, was climbing a lot of sites and on promobile found the most sensible ways off. But from personal experience I can say that they need to disconnect 2-3 times a month and they are automatically connected.