Their entire business model is based on deception. They should be shut down.
2D could elect to not enable them (to bring this conversation back on topic) - so far as I am aware, there is no legal compunction for any mobile operator to facilitate the access of the scammers. Admittedly there would probably be operational difficulties in accurately ascertaining just who the scammers were.
Perhaps 2D can tell us here whether they would at least try to bar the scammers from their network?