I would argue that misrepresentations were made to you if you were lead to believe that experience professionals were to be the instructors. I suggest you speak to a local attorney without ties to the school and inform him of your situation. I believe you may have a claim, but it would require a review of the school's promotional materials. I would collect the current materials as well as any previously published materials.
Disclaimer: I am not offering legal advice, assume I do not know the law in your state and that I am just making suggestions for starting points for when you do speak with an attorney. Do NOT rely on anything I write and contact a lawyer in your area immediately after reading my posting.