Telkom refusing to take ownership of their staffs incompetence

My simcard was ****** and used. I reported this to Telkom and requested them to suspend the simcard and they indicated that they have. I then settled the outstanding amount that was used by the *****. The following next months proved to be a nightmare as I discovered that they simcard was not cancelled and the ***** was continuing to run up a bill. I then followed this up with numerous phone calls, store visits and emails & still the simcard was not cancelled for months on end. I was then assisted by a gentlemen at the Gateway Shopping Centre store as he managed to block the simcard on the system. The ***** has now ran up a bill to the tune of R9k and Telkom is refusing to take ownership of this issue. I have asked for recording and have provided them with proof that I have continuously requested for the sim to be cancelled. I have recently app**** for a homeloan and was declined due to the Telkom outstanding amount the refuse to take ownership.

Anyone with any ideas on how to get this resolved. I have escalated the issue to the Ombuds and now require the CEO's and Complaints Executives email addresses.