I was terminated from my job as a nurse manager after I placed a complaint to the Corporate Hotline about fraudulent activities by my boss, coworker

I am a 40-year nurse and I became aware that State required inservice education was being falsified by the nurse manager responsible for conducting these required inservices was doing most employee's inservices electronically by using their log in credentials with the Executive Director and Director of Nursing's full knowledge. I attempted to squash this activity by addressing it with the aforementioned members of my team and they chose to ignore it. I then reported it to the ISBH, they investigated my complaint, substantiated it and cited our facility. Since this citing in October, 2016, these fraudulent activities have continued. I, once again, tried to get the ED and DNS to cease this practice by addressing it with the nurse manager doing this, and they refused. I then made a known complaint to the Corporate Hot Line and I was terminated immediately with no specific reasoning given.