I did not talk to their office. It does not quite agree with me how they promote themselves on their webpage, especially "beware of imitators" link. I guess negative advertisement makes a bad impression on me.
I have done oil pulling for a ling time, it does help you to detoxify. It is not a permanent solution, though. Be careful, if you are not used to it and start doing it every day, it could give you diarrhea. I am doing it 5 days a week.
I am also trying to research NMT (neromodulation technique) for cavitations.