Dr. Appointment

When the kids had their tubes and adnoids put in/removed I scheduled a follow-up appointment for August. Since scheduling that appointment the doctor's office has called 4 times to either change the date or the time of the appointment. I thought I was finished with the changes since I complained the last time they called but when I got home this afternoon there was another message on my machine requesting that I change the time once again. This is just so frustrating to me.