Customer service can't read a damn bill and failure to resolve the issue disconnect the line continously

The most terrible service in customer service. I called R150 airtime out to dispute my bill!!! Being billed twice for their mistake... They can't assist and they admitting that they don't understand but still repeating the same stupidity they see on the bill!!!! 6 different advisors did anyone call back no.... When taken out connect the first month they call you a million times!!!!