Vodacom account **********ly upgraded and vodacom processes taking too long to resolve matter

Three weeks ago I realized that my vodacom account had been **********ly upgraded without my consent and a sum double what I had previously been paying was being deducted from my bank account. I phoned vodacom after which they told me to send my affidavit anda copy of my ID doc to ********** I did this on the 11th June 2018. I then followed up with a phone call and was told I have to wait two weeks for a reply. Till this day I have had no one reply to my email and someone is still benefiting from ********** behavior. I cannot believe that a company as big and profitable as vodacom can be so inefficient. I will not be opening any more accounts with vodacom any time soon.