Vodacom's No Upgrade rule

Due to incompetence there is no Contract End Date on one of my contracts. This means that I can't upgrade, nor will the payment ever cease. I have spent numerous hours on the phone to the Customer Care dept, sat in Vodashops and sent emails - with absolutely no feedback. They do not listen, are unwilling to invest in a problem rather than a new sale, basically they don't care unless there's commission involved. I am now almost 2 months overdue for upgrade and am completely out of patience. Do avoid both Menlyn and Mall @ Reds