Study Permit - What to do?

Hi there,
Just wanted to start by telling everyone that I went through a intense depression and I just couldn't face or talk to anyone during this time. I completely cut off my friends and just locked myself in the house. I lost more or less 25lbs. Worst part, I didn't visited a doctor to seek help because there was too much going on my mind. I know its hard to imagine my situtaion, but I went through it and it wasn't something I would want to go through again or even wish for my enemies.
At this point I'm feeling much better but unfortunately, my study permit have expired along time ago. It expired in April. I went to see the advisors in my university and recieved NO help whatsoever.
I stumbled upon this resource and I hope to get some advice on what to do next. I'm absolutely clueless and don't know what to do.

Any help would be appreciated.