Telkom ignores mails

I have been trying since 13 January to cancel my Telkom internet service due to bad support. sending mails and getting confirmation that an agent will call me back just do not happen -I have stopped payment on my bank account , but all Telkom do is changing the amount to two months and sent it again and again.<br> <br> It is just impossible to phone them as one sits on the phone for more than an hour without an agent becoming available<br> <br> even some of the email adresses from their own website is coming back as unknown - what a joke