Can an ex-wife file a missing person report because her ex-hysband is not taking her harassing calls?

She can try to file a missing person report, but it won't go anywhere. The more important question is whether your brother has any obligations to his former wife (or children, if any) which he is not fulfilling, such as support or visitation. If your brother has no obligations to her and they didn't have children, then he doesn't have much to worry about. The same goes if he has obligations but he is fulfilling them. Her only real remedy is to go to Family Court by filing a post-divorce motion. And she will have to explain to a judge why your brother's address is so important. Maybe the explantion will be good; maybe it won't. But it will have to be based on something. By the way, if she is harassing you or any of your family members, file a police report. Edward Zohn, Attorney at Law, Warren (Somerset County), NJ