short data on contract and useless call center agents cant help

Hi. I signed up for a Made for Business S contract and accordingly the the contract (yello January 2019 issue) i was meant to get 1.5gb data per month. I have only been receiving 500mb each month since. I called 135 and the first person i spoke to me **** and told me that i had received my data. The next time my data was topped up, i made sure to check, and i i had only received 500mb like i knew. I have since called 135 a few times, and each person logs the info and says that it will be looked into. a day later, the matter is marked as resolved (sms received saying so) but i still dont get the data. I have even been to the mtn store at which i have renewed this contract and still do not have a resolution. reference numbers attached, thats 3 different calls for the same issue, still not resolved.

It seems like mtn are not honoring the contract that i signed with them! MTN are *******. they are very quick to take our money, but we need to jump through hoops to get mtn to honor their side of the deal.

I have subsequently put in airtime to buy extra data, thats a waste of money on my side, just because im not getting what was promised on the contract.