I want to sue Yueyang Social Security Center?

You'd better call the local human resources and labor security center first and ask about the standard of unemployment benefits in your area. In addition, if you pay social security after unemployment, the social security deduction will give priority to deducting unemployment benefits. In other words, some of your unemployment benefits may have been paid social security first, leaving 277 yuan. Make it clear, and besides, don't wronged the staff.