Vodacom charging Upgrades Admin Fee when we haven't upgraded

<p>We've migrated the contract for my son on ********** 997 and Vodacom is now charging us an Upgrades Admin Fee. Apparently we were paying for a handset as well of which the contact period already ended 20 July 2016. Has had numerous problems since changing the contract and every month since then its something else! Really want to cancel the contract once the period is over and just change to prepaid because this is ridiculous! 7 working days to get an answer! In the meantuime my bank account is going to be debitted with the incoreect amount!</p>