Trying to cancel line

I have been on hold for 27 min and 53 seconds to cancel my sister's landline, as she only has her cellphone at work and can't afford to hold for this long on her billing!! It's absolutely aweful: Please note due to high call volume there may be a delay in answering your call...do you have one person working the lines??<br> Her land line number to cancel is ***, she needs to give her one month's notice from today 1 June 2015<br> Her cell number is *** (Natasja Fourie)<br> She has logged an online support ticket, but no one has answered her cancellation there either.<br> <br> Please could someone contact her as this is beyond ridiculous.<br> <br> Service delivery is not what it makes out to be.