From your trust feedback, I believe you have been doing this kind of extortion for a few months already. Have you ever got anything from it? Why don't you use your skills and knowledge on more positive stuff?
If I didn't get anything, I would stop doing this long time ago. Most admins simply pay, without complaining publicly...
If that's the case, why aren't people publishing your explanation on how to prevent this kind of thing, to put you out of business, provider by provider?
What proof does any site owner have that you actually stick to your word?