I'm getting stuck paying for a doctor's visit I ne...

I'm getting stuck paying for a doctor's visit I never made or even went to. Now I'm stuck paying for it for some reason. Called to get on a payment plan and double one month and even miss sending out statement after correcting that mistake. So here I am again paying two months of payments for one month. I've already switched to a different health provider because of having to pay for a doctor's visit I didn't ask for and poor service.
The last time I was at this hospital for a C-section the nurse ignored me when I told her I felt something gushing down my legs. Turns out I was bleeding out with huge blood clots. I ended up having to have a DNC, blood transfusion, and wasn't able to see my baby 16 hours later. A different nurse told me I need to go to bed and stay there because it was "bed time". She moved my call button, cell phone and room phone. I was so weak and cold I couldn't even yell for help. We told the charge nurse and said I'd be handled but then ever nurse after except for 1 was rude and then tried to rush me out of the hospital. Nothing was handled and our insurance company was charged for all of there mistakes. I was so low on blood and they needed to put in a new IV. They made a game of nurses trying to get it even after calling the specialist with the ultrasound. I left the hospital covered in bruises. I was also given the wrong medication (blood thinner). The nurses didn't listen to my OB on things as well. So many more things went wrong....