So, the results.
Response from Tele2:
Call to Tele2 Voronezh is RUB 1,5 minute's like a long distance with Tele2 at Tele2.
But there are cases of fraud — when the host is switching device, and then the caller not only place the call but also has a team of mobile funds transfer and in the presence of their translation is. To restrict mobile phone service provider may user the complaint only subscribers, because to calculate such equipment is not yet available technically feasible, none of the mobile operators.
Original message Vkontakte, which made me find the answer: vk.com/wall91129138_5137
But rather this:
And the last known to me fact: the ad seems to be like Tomsk, but the room, according to support, belongs to Tele2 Voronezh.
Alas, the way to verify the "honesty" numbers I found.