30 GB promotional Data

I took out a second contract with MTN for my daughter, and 30 GB of data was offered as part of the deal. This was done in November 2015, I have been trying for over three months to get the data loaded, I have made approximately 20 calls to various call centre departments, and the story is always the same, its for another department, the agent has sent emails, emails were sent to the wrong department, and on and on it goes. I am not allowed to speak to the department that will load the data. I have spent numerous hours trying to resolve this, I have been nothing but pleasant on the phone, but this has got me absolutely no where. I have been a customer for many many years with MTN, but a simple thing like this will, as soon as my contracts are finished, ensure I move to another service provider