I think you have every right to be concerned. I know only what I have learned through the internet as I have found it difficult to get answers without parting with vast amounts of money "to come and see for myself".
All I can say is that a very good friend of ours became involved with these people and he committed suicide 4 weeks ago, we are still trying to come to terms with his loss.
Forum:
"Cults," Sects, and "New Religious Movements"