I was billed $100 over the amount I expected. I brought this up to my PCP’s office 3 months ago (which I check up on every month), but I still keep getting invoices. Is that normal? Should I be alarmed?

Basically, I was seen by PCP for an annual pap smear. Checked with insurance that pap smear is fully covered and I only needed to…

View More I was billed $100 over the amount I expected. I brought this up to my PCP’s office 3 months ago (which I check up on every month), but I still keep getting invoices. Is that normal? Should I be alarmed?