Feedback promised but nothing happened

I logged my first complaint with hello Peter on 23 November 2017 with regard to 10GB that was promised to me via SMS from MTN which I haven't received. A response from MTN was received from Alice van der Merwe on 26 November 2017 that I would get a response the next day. THIS NEVER OCCURRED.

I have made 6 calls to the MTN 808 call Centre number, and no one has made an effort to resolve my query with reference number: 1- ********** 2843. I'm am not happy with the service at all. I would like an answer as to why they make a promise, don't keep to it and are unable to deal with a query at call Centre level.