Mtn Promotional Data not received

I recently upgraded my one cell phone number and I still have not received the 30GB promotional Data - It is supposed to be split into 10 GB per month for 3 months. I logged a call last week Monday to have this resolved and within 2 hours the call was closed. I made numerous calls to Mtn Customer care to resolve this for me. Every time I was told to wait 2 to 48 hours. I called them again today, Now it will be resolved tomorrow, I keep on hearing the same stories over and over, but my issue is not resolved!!