MTN - Empty promises - NO 30gig data

On 25 Feb 2018 I upgraded my contract with MTN at East Rand Mall. With the upgrade I was promised the once off 30gig data promotional offer, needless to say after numerous telephone calls to MTN Customer Services, I have as to date not received the promised 30gig data. My first call to MTN was on 28 February 2018, the lady at customer services informed me that she will lodge a query as to why the data was not loaded, the query was escalated with Ref No:1- ********** 7638. I was informed that I need to wait 48 hours for the data to be loaded. My second call to MTN was on 02 March 2018, customer services could not give a reason why the data was not loaded, I was again informed that I need to wait ANOTHER 48 hours for the data to be loaded. My third call to MTN was on 05 March 2018, the same old story, customer services could not give a reason why the data was not loaded, I was again informed that I need to wait ANOTHER 48 hours for the data to be loaded. My fourth call to MTN was on 07 March 2018, this time the data will be loaded between 3-24 hours. Today (09 March 2018) was the fifth telephone call to customer services, I was informed that my query will be forwarded to the supervisor and can't be given a estimated time when the matter will be resolved. How many telephone calls to MTN Customer Services must I make to get my 30gig data, if MTN does not meet our agreement and their promises to their loyal customer, I will have no other choice as to cancel my contract and move to another service provider.