Bad service received from vodacom

I have two contracts with vodacom which i took up using my green barcorded id at the time. Some time last year there was a system change in Vodacom and to my disbelief my id number on the 1 contract was changed to a passport number. I have spoken to managers, consultants and even went to the westgate branch with a copy of my id so that they can update my profile with the correct info. Nothing done coz when i call in to get assistance i get asked to confirm my passport number. I say whoever put it there must confirm it.

Yesterday i called in to perform a sim swop and they had technical problems. Today again the problem persists. Don't actually know if it has to do with the fact that there is a passport on the system under my profile hence the sim swop does not process or is there really a technical problem. All i know is i don't wanna be asked to confirm my passport number for verification again coz then i will really lose it.