Did not receive data as per contract

I did an upgrade on 18/12/2017 for a 2 phone deal where I received an additional number for the second phone. On the additional number I was promised a once off 30 gigabytes of data and to date I have not received it. I took the contract out at MTN Canal Walk and I was there a few times to query this issue. They gave me a Ref #1- ********** 4014 and said that it would be sorted out within 72 hours. I went back after a week and they said they were going to escalate and also check with the person who I dealt with when signing up for the contract. I phoned the customer service 808 a few times and they also gave me a Ref # 1- ********** 4030 and said they would escalate it. I sent the contract to Itumeleng and Luyanda at 808 on different days but still no response. I am really disgusted by MTN as group as this is what they think of their loyal customers that stays with year in and year out. Nobody has ever came back to apologize or give a reason why I haven't received my data.