I got screwed

I been working for Comcast for a minute and decided recently to resign because of the stress from the job . I was out a few months for FMLA and sent in a shit load of paper work to get paid. One of the ladies lost my paperwork so that was another 2 weeks of waiting for a response. Since I left a few weeks ago they come back saying they closed my case since I left the company, if this ain’t some bullshit. Well no need to cry over spilled milk now…just had to vent