We have had a thread about this topic some time ago, try to do a search.
My personal opinion is that I wouldn't bother wasting money with a CC course. Airlines will do it anyway after they've hired you, and the way they like it. And they will hire you if your profile fits. If they need experienced CC, a course will give you none: it's on the field you gain experience.
If I were you I'd keep my money and focus on sending CVs. And read a book or two about CC careers if really you want to be prepared for interviews. Good luck.