debit order fee unreasonably too high

A debit order didnt go through in september for my telkom contract ,i received a message with a reference number and that my services will be suspended ,i called the telkom call centre and a consultant told me to pay the amount due into an absa account to avoid penalty fees.i paid the next day and the debit order for that month went through .all of asudden i get an invoice for the next payment with an extra R200.94 penalty fee to be paid .i called telkom again and the consultant named tshepo told me that the fee is just in case the debit order does not go through ,i feel that telkom is no longer providing good service to its customers and i cant wait to end my business with them ,that fees is way too high and that means i will be paying 3 times the amount of my contract amount..what a *******