How can I remove a friend from a cult like organization?

It’s supposedly a self improvement, personal growth workshop but I know it’s just one big mass marketing advertising scam. They prey on innocent, vulnerable citizens in order to get more money from them by brainwashing them and breaking down their defenses by doing these personal growth exercises and from getting them to recruit others so that this organization can get even more money.

Now she’s trying to get me and my boyfriend to join up. She’s pressing us and making us feel basically like losers, telling us how we’re not fullfilled and we should sign up to better ourselves. I’m all for personal growth, but not for shelling out thousands of dollars to do it. We’ve told her no many times, but she won’t accept that answer. Which I don’t get, because she doesn’t get compensated for doing so. I imagine she has some sort of quota to meet. I’m so scared for her mental state and what she might be learning from this and what info she might be discussing about herself with others at these meetings. You never if they’re secretly recording you to use their advantage.

I just need some advice and maybe some insight on these types of organizations. I’ve done a lot of research on this already but I just want to hear from others.