What arguments have been advanced against "Angel Therapy"?

From [AngelTherapy.com](http://www.angeltherapy.com/about_at.php) , I found this short description: > Angel Therapy is a non-denominational spiritual healing method that involves working with a person's guardian angels and archangels, to heal and harmonize every aspect of life. Angel Therapy also helps you to more clearly receive Divine Guidance from the Creator and angels. > > Everyone has guardian angels, and these angels perform God's will of peace for us all. When we open ourselves to hear our angels' messages, every aspect of our lives become more peaceful. I have a (non-Christian) friend who is an "Angel Therapist," and after talking to her, it sounds like she's acting simply as a medium/fortune teller, and using Christian-sounding terms to white-wash it. Have any Christian groups officially condemned "Angel Therapy" and if so what are their arguments against it.