Consult a foreclosure lawyer for help. Since your lender doesn't have to modify your loan (just like parties are never obligated to negotiate a contract they reached), this will be a tricky suit. I don't think you have a good chance with a fraud claim, since fraud requires a material misrepresentation of fact that you rely on, and I don't think you can prove reliance because you're not changing your position in reliance on anything they're telling you, like turning down a refinance from another bank. They're the only game in town for your loan because they own it, so there's no market they have to compete in.
But you may be able to claim some unfair business practice, such as in the "robo-signings." Yes, there are many people with similar complaints, so some lawyers are developing expertise in suing these banks. Whether they're successul, I don't know.
I'm only licensed in CA. This answer doesn't make me your lawyer, and neither do follow-up comments and/or emails and/or phone calls --- we need an actual agreement confirmed in writing before any attorney-client relationship is formed. Thiss answer does not constitute legal advice, and should not be relied on, since each state has different laws, each situation is fact specific, and it is impossible to evaluate a legal problem without a comprehensive consultation and review of all the facts and documents at issue.