MTN Poor Service Chatsworth Branch

I originally took a contract with MTN at the Chatsworth branch. Delene is the person that assisted me with the signing up off the contract. It was a double deal (20GB) 5 gig day doubled to be 10 gb day and 5 gig night doubled to be10 gb night. On the first month MTN gave me 30GB free to use within 30 days. On the second month of the contract i noticed i was only given 5gb day and 10 gig night and never understood it. I then went back to MTN chatsworth and was assisted by another person that worked there and he told me i was not checking my balance properly, and he explained that the double data would not reflect but it is there. I then said ok and left the store, only to find out when my data was depleted that month and used up, that I did not get the deal that I signed up for. I contacted Delene and she said she would follow up and get back to me but she did not, she always used the term escalating the issue and would get back to me. Thereafter I asked to speak to the store manager and I spoke to Andrew and explained all this issues to him. All hedid was just passed the problem back to Delene, so I was not happy and asked for the regional managers details then Delene said she emailed the regional manager and is waiting for feedback. After 3 weeks of no feedback I then told her I was going to report her store to the newspapers and she finally got the regional manager to call within that same day and then I was credited with some data. Thereafter I figured that my night data was not being used and contacted her once again and informed her of the problem once again she said going to escalate the problem. I was sent many sms's stating issues resolved and reported but nothing was attended to and there was no outcome. After another 3 weeks i asked Delene whats the progress and she stated she would follow up and get back to me. Then I received a sms stating the problem has been resolved please check and if the problem persists within 48 hours please call them. The night data started working on the 11th April 2018. Originally Delene said my data will kick in on the 12th morning of every month and this is the 3 month that this has not happened she said the billing cycle is the 11th but when i contacted 808 they stated that the data will only be located on the 14th of each month. I have run out of data and had to purchase when all this could have been covered by the contract that I originally signed up for. All i have received from Delene at MTN Chatsworth is empty promises, she is always busy she will check my account and get back to me when she has some time. Today when I called the store again and spoke the the manager named Rose and explained her everything that had occurred since 08 February 2018, she said she will check my account and call me back. When she called me back her attitude was this is not my problem and was very rude to me. I am not a satisfied and happy customer and my bills is always paid before due dates. I would like assistance with this problem as a matter of urgency.