Missing Data and Terrible Customer Service

I brought a Double your Data Promo 10gig (which would make 20gigs) bundle through the Vodacom App late on 26th Jan 2018 Friday afternoon. I noticed that I had not been credited the additional 10gigs, as stated and confirmed by Vodacom. I called Vodacom Customer Care, and the Agent who answered was just plain terrible, her attitude was one that just didn’t care what she was doing, she was having conversations with other people around her, she was eating on the phone, she kept miss quoting the number I gave her, and generally did not know what she was doing. She told me that it takes up to 24hrs for the additional 10gigs to appear on the account and that she would give me a call back to make sure that I had received the missing data at either 2pm, 1400hrs, OR 3pm, 1500hrs the following day, which was Saturday 27th Jan 2018. She asked me what time would be convenient - I told her to call me back at 2pm, 1400hrs. This time her attitude changed and it seemed as if it would be a problem for her to call me back at this time, despite her giving me the choice of time. She finally confirmed she would call me back at the agreed time. Needless to say, the Data was not credited, nor did I get any further response, phone call or communication from Vodacom. To date, every single month I have brought data via the app on the double your data deal, I have had to chase up, make a complaint, and contact Vodacom to get the additional data. And to date, I have only been credited twice for the missing data on the Double my Data Promo. This does not include all the missing Data that Vodacom stole, or made disappear in previous months, which I have made complaints about to Vodacom, it to date I have received no compensation for the missing Data I have purchased or any further communication from Vodacom in this matter. I will be seeking further legal action as there has been no further communication or recompense from Vodacom.