How do I fight this Health Care Bill that should never have been a bill?

I have completely been misled by a health clinc and I believed I was not to be billed for their services because they said If I was a on medical assistance I was eligible. I was never told about any fees what-so-ever. When I got my first bill the worker said “We don’t bill out to Medical Assistance Clients”. She was wrong. I have a huge bill and am not happy!
This is what their phamphlet says about fees.
FEES
Services are reimbursable by Medical Assistance administered through the State Department of Human Services. This includes most Prepaid Medical Assistance Plans (PMAP).

I have been fighting this bill for months and no one will help me at clinic. Now it is in collections and I am waiting for my medical records release form and have been for a while. I have contacted every person who is a boss of a boss and no one will resolve this issue. I completely know I am right….what do you think?