Horrible Vodacom account management

I was due for an upgrade in May, I went into a vodacom shop and was assisted pretty fast and got everything sorted out. Now I find out that I am / or my number isn't set as the main account holder. I now have to take time out of my day to go and give in a copy of my ID and a written letter requesting it to be changed back. WHY??? Why must I do all your admin for a mistake YOU(Vodacom) caused? You have my details on file, fix your mistake.