Online Bookings Not Possible

I’m trying to make an online appointment for an ID card for more than a week now. The system doesn’t send the OTP you need to verify your login. Today I went to the DHA office inside FNB Lifestyle and asked them to assist me with making a booking. They insisted that the system is working and told me it’s the only way to get an appointment. After leading me around in circles for a long time and figuring out it’s indeed not working, they just told me to go away and try again later or call the call centre. I’ve tried every day for a week to call and you never get connected on that number. An email also went unanswered for a week then I got the same unhelpful response. The DHA office at FNB was deserted of customers when I was there. I can only assume because no one can make an appointment. Does anyone know how on earth one solves this problem? I’m at my wits end and do quite urgently need my documents.