Telkom refuses to change to EFT payments.

I would like to make payments via EFT and not a debit order as my payments can be made more effectively, Telkom does not allow you to change to EFT, however every month on my invoice it states you can pay via EFT. I tried to call customer care and was told to use the WhatsApp line which was of no help. Eventually, a consultant called me and I asked to then change my bank details for this months payment saying that my debit order will not go through, she was rude on the phone and ended the call, I was not called back. What a lovely service from Telkom and I am stuck with this contract for another few months. Will try another service provider in future.