I think if you get Google involved in your suspicions things will get sorted. After all they are using Google’s name then connect whatever it is they are selling with Google. I get the feeling they are using Google’s as credential and thus people will get fooled. This is a dangerous game they are playing. Here is a sight that I hope will get you started. http//www.google.com/contact/

My suggestion is contact them and make them aware of this. After all you had “firsthand” experience thus I think you are probably the best person to report them.