What can you do when you have a stalker on the net and on the phone?

Continue to doent everything. Change your phone number and keep it unlisted. Get a new e-mail address. File restraining orders on him or her or both. Also, I'm curious... how bad a person would your ex have to be in order for you to NOT want him in your son's life? Maybe I watch too much Dateline and 48 Hours Mystery, but the situation sounds a little dangerous. Keep yourself and your son safe.