Expenses

Okay, so I don't have much luck with this stuff, like my friends have had.  But let me tell you a little about what's going on.
My name is Te.  I make maybe about 6500$ a year at the current moment.  Between having MS, and paying off debts to my parents and other parties, I manage to set just enough aside for myself every week. 
Today, I got a call from a debt collection agency.  Apparently, I have a balance due to a hospital for about 5700$....
Normally, I would ask my parents for help.  But I'm paying off a debt to my father of 1500.  I'm trying to save for a car....and I never got a bill for this visit.  It was during one of my MS treatments, when we were on a cash pay only basis, as often happens since my dad skips over insurance coverage pretty often.
I know I'm not really much in need of help by a lot of people's standards, and I can't really offer anything in return, buit I need help.  I can't afford to contest this, and honestly?  I just want it to go away at this point, and I have a deadline of the end of June if I don't want more fees tacked on apparently.  They've agreed to help me wait this long.  Thank you for taking the time to read this...Even a dollar helps.

Thank you in advance.
Te

ADDENDUM:
Okay, so the goal has changed, and not because I want it too.

Turns out, I got seriously screwed by an apartment complex. I owe them another chunk of change. Shit's going to hell in a hand basket really fast. I don't know how I'm going to go to college with this hanging over my head. I don't know how I'm going to be able to afford insurance, or my phone, or a car, or gas eventually. I don't know.

Thank you everyone that's helped so far.