I would sit and talk to the office manager if I were you. go on and on, about how you know there office is busy and you think she does an amazing job at keeping things on track, but when things fall through the crack like YOUR paperwork, it means you DONT EAT for two weeks, and DONT have meds for 2 weeks, and so on. Ask her if there is anything you can do to help speed things along, or make it easier in the future. try to meet the girl who does your papers. if you become personal to them, they are less likely to forget you, or shove your papers to the back. Send her flowers or candy or a thank you card for remembering you.

I KNOW you want to drive to her office to haul off and smack her, but that wont prompt her in the future. being someone she thinks highly of will.

I hope you can call the insurance company and plead your case, or ask the office manager to plead for you, since they are the ones that dropped the ball.