TELKOM DEBITS EXTRA WITHOUT MY CONSENT

TELKOM HAS INCREASED MY BILL FOR NO REASON AND CLAIM THAT I HAVE REQUESTED THESE CHANGES. I HAVE A STANDARD CONTRACT AND THEY HAVE ADDED ONTO IT AND ARE REFUSING TO RECTIFY THE STATEMENT. THEY INSIST THAT I REQUESTED THESE CHANGES BUT THEY DID NOT TOP ME UP IN JULY AND THEN ADDED IT AS ADDITIONAL TO MY ORIGINAL CONTRACT AND CHARGE ME MORE.