Prisma Health complaint: Extra tests that patient doesn’t need without telling patient but pay by patient

I went for an annual physical as a new patient. The blood draw didn’t include a normal WBC, RBC which is standard, but they added a hepatitis B or C that I have no history, no symptom with, and without me knowing it. I talked to my insurance, then I received a message from their billing lady said unfortunately I had to pay for it. I complaint to Prisma. One lady told me she would escalate to their boss. After several days I received a message from the same billing dept lady telling me the same story that I had to pay also implied that was not a big amount of money after insurance. The issue is what the doctor did with my blood without telling me.
On top of this, the prisma complaint lady sent me a letter promising at certain date I will receive a letter about the resolution about my complaint. After I didn’t pick up her calls— I need to work, our building has no cell signals and her working schedule is shorter than mine, I received a second letter telling me the case is closed because she couldn’t reach me. I was about to go to the complaint website to write to her, the website is blocked. So I have no choice but to go to where I can go.