Vodacom online *****ers

Firstly I am very disappointed regarding Vodacoms cancelation department that struggled to assist me with cancelling only one number how hard can it be? Secondly online has upgraded my sisters number now for the 3rd time without my knowledge,I am the account holder and should be the person giving permission for any upgrades now I am paying for 3 upgrades on one number within 3 months!! This is unacceptable and considered ***** om my name, I've called the *** and *** number with getting the awnser someone will call back but 48 hours later no one called. This is the poorest service I have ever received I do all my transactions in store and have never had a problem. I think to go back to MTN were there was non of this nonsens and ***** committed on my name!!!