Comment Discourage them through a long ticket system. (Score 0) 321
Make the users use a form. A very long one. Something like Bugzilla, and lots of questions that need to be filled in. Make the users use it. Every. One. Of. Them. For. Every. Question. They. Ask.
1- It will discourage them and they will fill it only when they can't find an answer elsewhere.
2- You will be able to fill up "statistics" of the most common problems and have them fixed by the ratio of complaints.
Well, at least that's how it seems to work where I work.