Charged For An Appointment The Doctor Rescheduled

This applies in Utah.

I recently was told I had a doctor's appointment via their automated call system. I didn't know what for or why, but figured I just forgot. I show up early for the appointment, wait until I can be seen, and head back. They run their usual time-killing monitoring measures (blood pressure and pulse). The doctor comes in and opens my record before asking why I was in there.

Turns out, the doctor didn't know either. Nothing on my record was noted about why I had the appointment, so neither I nor my doctor knew why I was there. The appointment was rescheduled for later when I needed an actual test performed, a few months from now.

A couple days ago, I receive a bill for $220 before insurance. Upon viewing the itemized bill, "Outpatient/Office Visit" is the only charge I see. In my opinion, this seems at least a little shady. What are my options?