We don't have an attorney-client relationship, you are not relying on me to take any action, and this is not legal advice:
It is impossible to answer your question without seeing the documentation. I would expect the contract says something like "we have not made any representations to you, you are not relying on anything we said outside of this contract, and this contract sets forth our entire understanding." Chances are you would have to litigate or arbitrate the case here. (The contract probably waives jury trial and may provide for arbitration instead of litigation, and probably designates where.) If you have proof of material misrepresentations (half truths might not be enough), you may be able to argue fraud in the inducement, fraudulent misrepresentation, violation of FUDTPA, etc.