Can a hospital gave my name to an insurance carrier without my permission just because I told them I didn't have insurance?

Additional information
When I got the bill, I called the H and casually asked how much it would cost for a Thyroid, Prolactin test, and VP. In less than a minute, the H answered:

Thyroid: 301.75
Prolactin: 348.24
VP: 38.67

When I called back later that day and identified myself, I was transferred to accounts payable, who said that they did not have exact prices. When I gave them the prices, they said, "Oh, well, what do you expect us to do?"

I paid $271.39 after the 20% off. I have no clue, nor do they, of how that figure was reached with any one or a combination of the three procedures I had done, but they are adamant that it is not their responsibility to pay for "our mistake."

The bill was due 10/02/09 and 10/08/09 and I have made no payments. My credit score is 760. My credit is perfect.

I have the names of the accounting person who was caught red-handed in the "we don't have the exact prices" lie.