Cell C DATA not credited to my Sim after paying R 1 999

Hi, Last week Monday I went into Cell C Dainfern to load 200gigs on my prepaid Data sim card. As usual they were off line. The lady said I must do it on the App which I did while I was there. I paid R 1 999 on my Discovery Credit card for the Giga200. It has now been 8 days and they have not credited me with the 200gigs. I have asked Discovery to reverse the purchase but they say only Cell C can do that. Discovery gave me an authorisation code to give Cell C. We have opened a case with them and still have no feedback. Case number is 842916. It has now been 8 days that they have the R 1 999 and I have no Data. This is totally unacceptable Cell C. You told me the money was not cleared. I sent you a letter from Discovery stating that the transaction has gone through.