Spec-savers not honouring appointment and not even a care for their customers

Such a disappointment from Spec-Savers Keywest Mall. I went the to get my new glasses and the service that I got was beyond terrible. I first come in and they asked me to set up an appointment, fair enough I did. When I went back appointment booked and confirmed the lady told me to wait the doctor was busy I understood, After 15 to 20 min the lady told me they had to reschedule my appointment. Funny enough the store was not busy and the doctor told her that she is busy and can't honour the appointment. Why make an appointment if you can't honor it. They make me come twice without assistance. I was their customer and I don't think I'll be returning for their services since they don't even need their customers