I have been seeing physicians at Georgetown for 9 ...

I have been seeing physicians at Georgetown for 9 years for a head injury and complications thereof. From primary care to orthopedic care and 2 knee replacements, I have trusted medical professional care to GTUH. I have recently encountered an inexcusable event in Department of Psychiatry. My Dr of 9 years has neglected to reschedule a cancellation I made due to dizziness and fear of falling. I have made 10-15 phone calls. I have left messages at front desk for them to email him, I have left message for department administrator to call me back. To date, I have had no response from anyone. It is totally inexcusable but not out of norm for this renegade doctor. He prides himself in being out of communication with his patients. BAD MEDICINE. Bad Physician. I have now after 6 weeks of this outrage behavior contacted the hospital administrator. They seem not to concerned about these events. I find this inexcusable and extraordinary. One cannot just stop providing service to a patient and offer no finalization or next steps. Review what really happens in such cases.
ET.