Yeah thats what most people seem to say about the phone interview and that you dont get any feedback. I'm in the same boat as you. I am actually going to take the CNA course in April, but I have been volunteering at a pediatric clinic since October of last year where I have learned how to take vitals, room patients and so forth. I mentioned this in my application so I am hoping they will not hold my lack of experience as a CNA against me.