Server Error - everybody aware but nothing is done

I am posting this complaint after a week of struggle to get proper and professional answer from VFS. I sent mails and contacted VFS helpdesk but they are still unable to provide proper service to their customers. On September 26, 2015 I scheduled my appointment with VFS Johannesburg branch for September 30, 2015 8.15 - 8.30 am. It's Permanent Residence Application PRP***. Unfortunately I can't download and print Appointment Letter. When I press on \Download Appointment Letter"button"