Is there some legal action to take against the BKs?

Hello everyone!
I really don't know where to start, but my experience is also same as many members have already shared here. That is, losing loved one because of their involvement in BK.
I am trying to dig into truth of Brahma Kumaris and what actually they are seeding in people. I have searched many many sites and blogs, including many discussions of this forum. But I am not getting exact information about how to resolve and get rid off an effect/cult/hypnotism/misguidance of BK on someone!!!!
I never went to BK center, I have just studied information/videos of BKs website : http://www.brahmakumaris.org
But I haven't seen any stuff there which controls/changes person's thinking about God, Soul, Truth etc.
I, myself, found no interest in those stuffs as I believe that there's no point questioning/changing anyone's belief in God. I cannot stand when people exaggerate importance of their own religion only. I just keep quiet and walkaway from them. As personal beliefs are very close to person's emotions, so better not to argue or correct it. But when some groups like BK are affecting direct to my loved one's changed behavior, I couldn't hold up long, as it is breaking my relationship, breaking my dreams and plans with the same person who is now acting totally different after his involvement in BK!!!!
I have tried in many ways by arguing, explaining so much about that unexpected change of them. But it's all wasted. I don't want to argue with them, who is under the effect of some group's mysterious teaching. So I started at my own to check what is going on there in BK. Through internet. I found many many shocking facts of frauds, irrelevant information, cult, crazy Baba Milan etc etc stories and posts regarding BK.
But not a single information of how to stop that thing affecting my family member, how to take any actions against that group, how to convince my loved one to stop going there!!!!
I left unanswered and deeply feeling helpless, just watching him going away from me and do nothing at all!!!!
Please give me some guidance or some way please, please, please.
I really don't know where to start, but my experience is also same as many members have already shared here. That is, losing loved one because of their involvement in BK.
I am trying to dig into truth of Brahma Kumaris and what actually they are seeding in people. I have searched many many sites and blogs, including many discussions of this forum. But I am not getting exact information about how to resolve and get rid off an effect/cult/hypnotism/misguidance of BK on someone!!!!
I never went to BK center, I have just studied information/videos of BKs website : http://www.brahmakumaris.org
But I haven't seen any stuff there which controls/changes person's thinking about God, Soul, Truth etc.
I, myself, found no interest in those stuffs as I believe that there's no point questioning/changing anyone's belief in God. I cannot stand when people exaggerate importance of their own religion only. I just keep quiet and walkaway from them. As personal beliefs are very close to person's emotions, so better not to argue or correct it. But when some groups like BK are affecting direct to my loved one's changed behavior, I couldn't hold up long, as it is breaking my relationship, breaking my dreams and plans with the same person who is now acting totally different after his involvement in BK!!!!
I have tried in many ways by arguing, explaining so much about that unexpected change of them. But it's all wasted. I don't want to argue with them, who is under the effect of some group's mysterious teaching. So I started at my own to check what is going on there in BK. Through internet. I found many many shocking facts of frauds, irrelevant information, cult, crazy Baba Milan etc etc stories and posts regarding BK.
But not a single information of how to stop that thing affecting my family member, how to take any actions against that group, how to convince my loved one to stop going there!!!!
I left unanswered and deeply feeling helpless, just watching him going away from me and do nothing at all!!!!
Please give me some guidance or some way please, please, please.