OOB rates charges without consent

I do appreciate the effort to follow up telephonically with my complaint pertaining to the change of my data account settings to surf out of bundle rates after the my contractually agreed upon amount is depleted. However, having my call transferred with explanation, then cut off is highly unprofessional. To make matters worse no attempt to call back made thus far. This has cost me THOUSANDS of Rands and HOURS of my time, I would appreciate it if someone whom is capable of explaining to me why two of my data accounts had their settings changed to only cut off at the credit limit and not the data limit could contact me urgently. If what I suspect is true and an error in the internal account management of Telkom mobile or a blatant attempt to have clients run up bills far higher than agreed is the cause behind the costly exercise, I intend to take this matter to the National Consumer Commission.