The union representing the city’s firefighters has filed a complaint against the city and state over unfair promoting practices, compensation and unpaid raises. International Association of Fire Fighters Local 198 filed the complaint Monday in state Superior Court alleging the city and the state Department of Community Affairs and Division of Local Government Services have failed to “act in good faith” when promoting firefighters to captains and failed to pay contractually mandated step raises. The DCA said it is disappointed in the union’s decision to litigate rather than continue discussions it says have been taking place in good faith and on a regular basis.