How the HELL (can I say that) do these people keep doing this? One reason is lack of concern by government enforcement agencies. But we, the buyers, have to take part of the blame.
I encourage anyone who has had a dishonest/unethical, or illegal experience to contact the FTC at
https://rn.ftc.gov/dod/wsolcq$.startup?Z_ORG_CODE=PU01