Poor service and not living up to what their expected to do

Bad and slow service I’m currently a health student that needs to be registered with HPCSA but till this day I have not received my HPCSA certificate where as I paid ever amount last year but they have failed to process my things which lead to my application being cancelled for what reason I’m not sure because I’ve paid, what pains the most is that I need to be registered with this department and I need the certificate in order to progress within my studies, I have been calling and calling since last year and each time they promise my matter will be sorted but still nothing. I don’t know what to do anymore