Go to maps.google.com and type in "feed store, montgomery, al" in the search part. If you've been to (or called) all the feed stores listed, zoom out and you'll see more. Ask each one if they know who might have corn meal.

Alternatively, type "grocery store, montgomery, al" in the search. Skip through all the Winn-Dixies and look for those specializing in Mexican patrons. If you go there, be sure you get pure corn meal and not 'masa mix' type products. Those are premix bags like Bisquik with baking soda, salt, and everything but eggs and milk to make bread. It is okay if the corn flour is fortified with niacin and thiamin. Those are vitamins.