MTN not allocating DATA.

I have made more than R150 worth of calls to Melissa and the staff of MTN Cape Gate and still not getting the DATA allocated to the contract for my mom. First call on Tue 8th Sep '15 with followups every day. Melissa keeps on passing the buck to the point that she informed me a week later I should call someone else because she is not available tomorrow. I have also called the call center directly (from my landline) more than once with no joy. Please could MTN either sort this out or reverse the contract (with penalties of my call charges) as it is the worst service I have ever gotten from a company!