body: I made a doctor's appointment by calling and reserving it.
  
  
  I received a text messaging saying that I need to call the doctor's office and confirm my appointment, and that if I fail to do so the appointment may be cancelled.
  
  
  I forgot about the appointment and missed it, and then I received a text message saying that I owe them $125 for failing to cancel the appointment.
  
  
  Is this some kind of fraud? Or why do they do this?
  
  
  I will never pay them unless ordered to do so by a court, which I don't expect to happen, but is it normal?
  
  
  
title: What's with unexpected cancellation fees?