I have ceiling fans (with lights) in bedrooms and familyroom. They are controlled by switch w/battery. The fans and/or lights started coming on by themselves. Thought might be battery. Replaced batteries. Still have problem. Took batteries out of switch and the fans and/or lights still come on by themselves. What should I do?

You need to change the frequency of the fans and remotes. See:

Ceiling fan remote controls - help and FAQ- Ceiling Fans N More (http://www.ceiling-fans-n-more.com/ceiling-fan-remote-controls.php)