South Africa's Vaccination Registration Portal - Will leave many without vaccinated

Registration opens for over 50. We register on the provided website. Receive an SMS confirmation. There is no further code, direction for the past 10 days. So I re-register, again there is no code, no vaccination site details; they say that we are now at the end of the Q. The South African Government Helpline is completely clueless why some are receiving vaccination codes while others aren't. Why would a computer system stop sending codes to some people? This is how countries are plundered to become 3rd world countries by breaking simple Civic systems, which are, suppose to be computerized. Next? Guess one needs to turn up on the vaccination site and check if one gets lucky...