OK I have someone in my life that likes to send me way too many foolish messages, so I am looking at revenge.
Started digging around for a way to screen bomb and automate SMS messages back. Sofar I have stumbled on this old project for smsbomb
https://code.google.com/p/sms-bomber/ and http://androidfreeware.net/download-sms-bomber-text-bomber.html.
But no automation. And the code is 4 years old. So not sure if it even works. Also looking at this https://play.google.com/store/apps/details?id=com.lylynx.smsscheduler&hl=en, SMS Scheduler which looks promising. No source code thought.