Has anyone heard of Diamond Tree?

What about Kendall Cho and Nikken … I guess he’s leading this company.
My parents have just signed up and are convinced it’s a great thing. I personally think the products are weak but very expensive. I’m just getting home from a seminar hosted by Linda Proctor. This is the first time I’m being exposed to MLM scheme. Any advice on helping my parents understand that this isn’t a good thing and they should cut their losses which they still have some $ and friends?