I live in California, but my former employer (Federal) is in Virginia. They took 3 months to process my resignation. During those 3 months , they charged me for "leave without pay" and now I have a bill from them charging me for advanced annual leave. The worst part is I actually earned annual leave for 2 1/2months prior to resigning, but I never received credit or pay for it. Can they get away with this? How do I make a formal complaint?