MTN not delivering on contract

During the 2018Black Friday on 23 November I upgraded my cellphone contract. As part of the upgrade deal I should have received 20G of data plus 14 G of data. Today one month later I still have not received the free data as per the promotion. I have reported it to the local Mtn shop who on their part reported it to Mtn who had to add the data. I have received several references and sms"s that indicated that the problem was fixed. First reference 10/12/2018 1- ********** 8976 2nd ref:1_ ********** 8372 15/12/2018 3rd ref:1- ********** 4486 18/12/2018 escalated query 4th ref: 1- ********** 3085 19/12/2018 also escalated On each of these references I received a message that the query has been resolved. And that I have to contact Mnt in 48 hours if problem persists. This is absolute poor customer service and a sign of a giant forgetting that all of the small people that subscribe to them helped to build the empire.