"Cancelled outpatient appointment 1 hour after I arrived"

I had an appointment this afternoon with the Trauma and Orthopaedic Clinic at St. Helier Hospital, Carshalton. I arrived half an hour before my appointment so that I could have an x-ray at the start of clinic. This was a rearranged appointment, as the one booked for early February had been cancelled at short notice.

The x-ray form had not been signed and so I was told I would have to wait. The nurses were there at the beginning of the clinic but after about 15 minutes announced to the patients in the waiting area that the doctors were on their way from Epsom hospital. After another 15 minutes, a nurse informed us that they were trying to find out what was happening. Then finally around a further 15 minutes later, we were told that the doctors were in a conference and had forgotten to cancel the clinic.

This seems terrible service, resulting in me missing work at great inconvenience and now I need to book more time off. I would appreciate a proper explanation of what happened and how it was allowed to happen.