NO FEEDBAKC AFTER SEVERAL COMPLAINTS ***

I upgrade my cellphone contract with MTN on 24/1/2015. I also ask for a 1 GIG data bundle that was agreed to every month was the money deduct from my Bank Account for the 1 GIG data bundle, but I didn't received any data. I queried it several times and received a reference number *** on 26/3/2015 that it was resolved, but I still didn't received any data. I went back to the MTN branch several times and the people there told me I need to email a complaint to [Email Removed] They gave me request no: ***. I wrote a complaint and send it to the email adress as given to me, but it came back. I phoned the branch and another person told me that email adress don't exist anymore. In the mean time I don't have any data on my cellphone for which I paid January, February and March. I queried it several times and receive ref no that is resolved, but stille didn't received the data that I already paid for!!!! What do I need to do to get my data or money back or where can I queried this to settle this matter?????