SunStar,
I received the same letter of offer, after deciding
not to take the interview. I waited for the phone call initially and decided to call them to find out why I hadn't heard from anyone. I was told students were responsible for booking the phone interview (fair enough) and CALLING the school aswell!
I then had a chat to the course coordinator and things seemed very unorganised. I'd stay well away, as some people have already pointed out - You're going to spend a lot of money on training and therefore should be treated like customer, somehow I didn't get that vibe from anyone there.