It's not coercion or extortion, but might be interference with business activity, or harassment given the extent of your actions. You could report your side of the story, without inflammatory language - just the facts - within established forums for that purpose, like the NY Attorney General-Consumer Division, the Better Business Bureau, a company website complaint page, a letter to the company President, an online forum which addresses the issue generally (a feedback forum of some kind), or small claims court, or if you want to get your friends to gather in front of their store and picket - a sidewalk is a public forum, or get an attorney to write them a letter.

