Honda Civic LX brake light stays on?

So I own a 2001 Honda Civic LX & recently my brake light in the dashboard stays on even when the brake is down. I already took it to Brake Masters & even they couldn t find the problem! The guy suggested to disconnect the wire that connects to the brake cylinder to turn off the light but it still stayed on. He suggested that it might be a wire inside my car since nothing is wrong with anything by the cylinder.Supposedly by car doesn't respond to their machine that tells them where the problem will be. They said the brakes are fine.
I was just wondering if anyone has suggestions on what I can do? Or maybe where I can go?

Well I wouldn't go there anymore! They have obviously NOT mastered brakes yet!

Is the light red? Then it means either the park brake is on, the fluid level in the master cylinder is low, or the proportioning valve is out of whack.

Yellow light would indicate a problem with any part of an anti lock system.

Find a shop that knows how to repair brakes!