Courtesy... here have you gone?

Ok... I know I seem to rant a bit about politeness and being nice, but I experienced something the other day that made me shake my head.

I am sitting in the dentist office (love my dentist... Dr. Sunshine, no lie!).  I have had my xrays done, and we are starting my cleaning and the hygienist in the next room is still waiting for her 8am appointment.  At 8:10, she finally comes in on her cell phone and sitting in the chair.  She continues to talk for the next 5 minutes.  The hygienist is patiently waiting for her to finish.  She finally gets off the phone and they do xrays.  While the hygienist is in the dark room processing the xrays, she get BACK on her phone!  The hygienist is only gone maybe 30 seconds tops!  She remained on the phone for another 10 minutes.  At 8:25, she finally hangs up again and the hygienist finally can start.  As a result of this very rude woman, the hygienist is now behind for the entire day.  No, the office does not have a cell phone policy but because they don't, is it the patient's privilege to waste the office's time?

Should any service provider, be it doctors, dentists, hair stylists, manicurists, auto service, etc, be allowed to charge you for wasting their time?  Everyone's time to valuable.  Why should you have the right to monopolize someone else's time?