I also want to emphasize something. The HW Helpers are some of the most valuable resources that we have here on PF. You guys are putting in time and effort to help someone without expecting anything in return. I can safely say that on behalf of the mentors and the admins, we can never express how grateful we are for your efforts. That is why we try all we can to make sure you have not only all the assistance that you need, but also try to resolve any issues that you might have, either with the members of the forum, or with how things are run with the homework/coursework forum.
This is why, if you are helping a member that is a pain in the rear end, don't waste your time in dealing with the aggravation. Let the mentors deal with all the dirty work by letting us know.