What should I do if I get injured or bitten by a dog?

I walked into the yard and there were two vicious dogs chained 2 feet from door. One had broken chain and before I realized it the dog attacked me. It made a hamburger of my lower right leg. No one heard me screaming as the dog continued to bite me several time. I immediately went to emergency room. Instead of calling 911, they waited till they could start their van (which would not start on several attempts) so I was bleeding out for ten minutes. Upon arrival at the hospital, I learned that I was punctured 16 times (5 straight to bone), exposed, broke an artery and fractured my tubular bone. I received 2 surgeries in my 7 day stay at the hospital. I returned home with a home health nurse. They claimed that they do not have insurance. I have more surgery to come. Any thoughts? I need advice on how to go about this. They are trying to return the dog home. I am the 5th person to be attacked. This is the county not city limits any lawyers or someone experienced in this kind of predicament?