Very unprofessional! It does not matter when you schedule an appointment they will call to reschedule you.
They took over the office from my last dentist, so keep in mind I was my old dentist six months prior to seeing the current dentist there. They told me that ALL my old fillings needed to be redone, and other things that just didn't seem correct. This happened to both my son and myself. Needless to say I got a second opinion from another dentist and none of the items they mentioned needed to be done. They were trying to get us to do work that didn't need to get done. My opinion is that they are completely unethical and would not refer anyone to them.