Your LBS seems cooperative and that's a plus. I would encourage them to stay on top of things. I have found that a letter ...that is a hand written, old school, snail mail letter to the President of the company documenting all your correspondence and the names of those you or the LBS contacted, can work wonders. If nothing happens, then I would look into a lawsuit. This is probably a small claims court action. There are jurisdiction issues but it's possible that in your state that because they have an authorized dealer in your area that you would be able to file. I would wait a liitle longer before going all out on the internet. It's an effective strategy, but remember you are accountable for what you post, so accuracy and documentation are prudent measures.
Good luck and let us know how it works out.