Failure to evalutate per situation

I have a situation where I had an appointment at a specialist in February '24 which required a follow up this August to monitor growths. As I am not sickly, nor do I misuse my medical aid and only use it when needed. So , for the follow up I made the mistake to assume it was fine to keep my appointment since It was already approved and had authorisation the first time, I only pitch for the appointment and the dr's office will send through the paperwork. Not. The absolute pathetic how clients are treated like they're all dishonest. The lack and rigid procedures does leave a foul taste in my mouth.