You've raised a lot of issues. For a proper answer an attorney would need to know why you were tricked into an ambulance, past medical history, what you were treated for, what kind of hospital it really was, and more circumstances. I suggest seeing a personal injury lawyer for a consultation to better evaluate your case. You may have one.
This is not legal advice nor does it create an attorney-client relationship. This is for education and informational purposes only. It is always recommended that you contact an attorney with any concerns as each individual case is unique.
You've raised a lot of issues in this question. Your best bet is to contact a lawyer and discuss the matter with them in person. They will be able to listen to your entire story, ask follow up questions, and uncover what exactly your options are. They will also be able to explain the process and likelihood of your success.