Telkom thievery

I bought data through the telkom app on the 7th of February 2018, during the process of purchase I received a notice that explained the transaction was unsuccessful. After the second attempt that also failed I received messages that I was billed for both transactions. Long story short telkom refused to reverse the purchases which I accepted of R698.00 eventually as I saw I was fighting a losing battle. To make things worse I still haven't received my 10 gigs of data for the 1 purchase I made of R399.00 and telkom can't give me any answers other than "a case has been logged on the 7th of February please be patient ". I feel ****** and powerless as I'm sitting with a catch 22. 1. Forget about it and let them ***** R399.00 2. Reverse my debit order and then they just list me at the credits bureau . I've spent more than 5 hours on the phone with them regarding this matter and it seems like absolutely no one can help me.