Can you turn in your own paperwork? That way next time this won't happen.
Your case worker is only human. I am a case manager also, and very overwhelmed by the amount of work to be done, and the amount Medicaid reimburses my company makes the case load very unmanageable. Maybe he/she got sick or had a lot of emergencies.
Have a little compassion for your worker. Make a phone call yourself to Medicaid to get it reinstated if you have time to post you have time to do that.