What happens if the inmate is not released on their out date?

This would be an ultra-rare occurrence. Normally, it is the inmate disseminating incorrect information to a family member. But if this was a genuine mistake, and the release date was February, why isn't the inmate seeking a meeting with the warden? Generally, the inmate is in constant communication with their counselor or case manager all the way up to the day they are to leave.