Billed for data I did not ask for

I have phoned in twice to the call centre to ask that I be refunded for the add on data bundle THAT I NEVER ASKED FOR and that it be removed from my account. <br> <br> Instead of paying R399 for my contract (which I agreed upon!) I am now paying R748 per month and I have yet to have an answer on a call that I logged in November of 2015. <br> <br> This is extremely frustrating that something was added to my account, without my consent or knowledge thereof and that I am still paying for this monthly after I discovered it and tried to have it rectified.<br> <br> My claim number is: ***9