IB prep resources?

Hi all! I am not sure if this is the correct group to be posting in, but I have a question about Investment Banking prep.

I recently saw an ad for WallStreetMastermind and I decided to learn more about it. It's an IB prep course. I booked the first free session to learn more about it and to get "advice". However, to my surprise, I was not offered any "advice" as they had claimed. I also got to hear few things: you are unprepared, it's going to be so hard, and only we can help you. 

I know that the course is going to cost a couple of thousand dollars. Has anyone taken it before, if so how was it? Would you recommend it?