http://www.taso.org They had some mgmt problems and had a big turnover. Several chapters including larger ones withheld their annual dues at the end of last season and some withdrew completely.
Our chapter is ricebelt. We are West and mostly South of Houston.
One other thing you might do is show up at a volleyball game at a middle or jr high school close to where you live. Many Volleyball refs also do basketball and a lot of places has the same org to manage them. Volleyball season starts this week, so you can get in early.
Stick with it. I was calling at your age then stopped for many years. Really wished I hadn't.