R500 extra spend *****ently being charged

anessa Naidoo sold me a package @ R399.00pm in August 2015 only to find that they had also decided to load an additional R500 extra spend onto my account which I never authorized !! The problem has been continuing since then and each time I call and vent my issues the consultant promises that it will be rectified !!!I have a case number ***4 which has proof of all my calls and my complaint .. only to be told by an arrogant staff member that the case has been dismissed because I used the data ?? no further case !!! I would like to know whether Telkom has an ombudsmen that can be contacted as I am most certainly going to take this furher