Here is a real life example of a sketchy ayahuasca retreat that kept threatening a Spiritual Master with violence, posting he was a peadophile, and defaming his police father for sexual offences against boys. He has complete legal immunity and they couldnt touch him. It is called Aluna Healing Center and they do ayahuasca in Potter Valley in California. United States.
They kept threatening to report a Spiritual Master for doing ayahuasca and Drug Enforcement Authority got involved
If you get the authorities involved then your a witness and they cant sue you. Nobody could sue this guy and ICEERS are on the side of the bad guys. All they will do is cover up for bad behaviour and give legal backing to try and have people silenced using threats of violence or smear campaigns.
Santo Daime Church tried to bring him down and it destroyed the Church in terms of legalization, apparently someone did a spell of black magic on his astral body and a curse of paranormal fires gutted a bunch of ayahuasca retreats on top of the legal carnage.
They spent years harassing, persecuting and defaming him as a mentally ill peadophile, it destroyed the Church and the Drug Enforcement Authority got involved. They do SWAT raids but they watch and wait. Then when you least expect they take your door off at 5am, cuff you up, haul you before Court and then your in jail. The moral of the story. Dont make a war with someone from a police family who has special powers in the astral worlds as a result of ayahuasca.
Santo Daime attorneys couldn't touch the guy and they had to take back everything they posted about him, and Aluna Healing Center are in the eyes of DEA.
How to deal with it. Give them a chance to clean up their act, if they carry on, just get law enforcement involved and it stops it.