Charges me R210 admin for their mistake

My banking details changed. I let Telkom know via email and went on their website to change the debit order banking details. Even after doing this I knew that something might still go wrong as I did not receive any feedback from Telkom. I then went onto the internet and settled my account with my credit card before the end of the month to avoid the debit order failing with the old banking details.<br> <br> I have been referred to 3 different email addresses and can't understand why nobody is helping me. Some of them do not reply at all and the others keep referring me to other departments. Nobody takes any responsibility to resolve the issue. This is a simple issue I need resolved ASAP.