Start all over with new management. Management is the main problem.
Downsize on all the managers. More chiefs then workers. Uneducated supervisors. Hold management accountable for lack of poor leadership. When the issue isn't the workers but your management that is nothing but over paid babysitters, that act and say things very unprofessional. But it's accepted and promoted.
Outside company to evaluate management
Answered - Billing Coordinator (Current Employee) - Findlay, OH