Complaint - you messed up my upgrade again!

Hi, I cant believed you messed up my account again. I was due for an upgrade & asked for airtime to be added to the 20gb package I had. The Consultant understood my needs but when she activated the changes it deleted the 20gb. Now I have airtime & 1gb data! Please fix this asap without charging me more or cancel my account without costs as Im highly annoyed that your Consultants keep lying to me. Im so over you & your bad upgrades! 6 telephone calls, 5 Agents & none can help me! Tobi is the stupidist thing I've ever encountered & your IVR is worse than the 50 telephone numbers ABSA uses for their services. FIX THIS