MTN No free 30G upgrade data received

I have upgraded my MTN contract in March with the upgrade including 30 G free data. To date and several calls later no data has been allocated. Every time I call MTN they just say that the call number is still open and the data will be allocated within 3 days. Nothing is happening. The call centre says there is nothing more they can do as the call has been logged. I find this truly pathetic. I even had to email my new contract to them which I did. Still no feedback or data. Is MTN the better connection?