Can a doctor charge me for a full office visit when i was just asking her a regular question in waiting room ?

My parents had a procedure in one of the surgical centers when they were done at waiting room doctor came to check on them and I asked her about pain I feel sometimes and she told me that I might need to see her on the office, doctor collected my name and phone number. minutes after her nurse contacted me via my phone and collected my personal information and credit card then billed me for a doctor office visit when I was never see the doctor in her office