Data bundles

I called the vodacom call centre on the 21st of March to enquire about my monthly debit order that was more than what we agreed on. They told me that I had a data bundle subscription on my contract that I did not know about. I told the call centre agent to cancel this, he confirmed that this was done.<br> I checked my data balance on the 30th and found that I had extra data that I did not purchase, I called the call centre again and the call centre agent told me that the subscription was never cancelled. She logged a request to investigate this further, 5 days later I still haven't received any feedback from vodacom. <br> I suppose you people expect me to pay for your call centre agents incompetence and that it's my fault that they cannot follow simple instruction. <br>