The worst service provider in the world

I contacted Telkom to cancel my ADSL line last month as my router packed up and I also have a Fibre connection with a. different service provider. No surprise they still have not cancelled the service and continue to charge for services we don't want. Accounts blames Sales who have not done their work. I get a reference number from Sales which means nothing. Then been told to register online to cancel service - the registration does not get approved - so I can't log in. This is the worst company in the world to deal with. Up your game and get with it !!!!!