Frustrated!!!

I would like a competent person to please look into my account and cases logged on 19/11, 26/11 & 02/12. To date I have not received proper feedback as each person I speak to does not seem to understand what my query is... all I need is for someone to look into the data usage on my account and explain why I am being billed for internet usage when I get data each month?? Instead of sending me a standard response which makes no sense and doesnot answer my questions, can someone actually investigate what has happened. Please take note to refer to my case logged in 2014 were Cell C incorrectly billed me for months and after thorough investigation I had to be refunded more than R4 000! So please give me some answers urgently.