Utterly unprofessional disgusting service at Spec savers Garden Route Mall

Made appointment for my wife a week ago, confirmed for 12H30. Yesterday a lady called to confirm. Got to spec savers Garden Route Mall 10 minutes ahead of appointment. At 12H30 the receptionist inform me that the examiner made a mistake and we have to wait as she is taking other appointments ahead of us.... no care in the world! My wife is terminally ill with a brain tumour, All that I wanted was for her to get new glasses... needless to say this utterly unprofessional disgusting service upset her to the point that I just took her out of your shop. I do not have words to describe your service... except disgusting!