False billing and Blackilisting

I requested this account to be closed in July and August 2015 , due to many problems with Telkom.<br> In August my internet connection was stopped, and I have not had any use of it since, and considered this matter resolved. The suddenly in November I got a bill and a phone call claiming I owed over R3500.00 in unpaid bills.<br> I notified the caller that that was impossible as the line had be disconnected and that I would not pay for a service I did not receive.<br> I have not had internet since end July 2015.<br> I will not pay for a service that A) I did not receive and B) that I did not want.<br> This error on your side has now caused that I am black listed with TPN, this is unacceptable. By blacklisting me for a non-existent account you are opening the door for legal action.<br> <br> It has been 2 weeks since the above e-mail and yet I have had no response from your company. This is the 5th e-mail in 3 months with no response.<br> When I try phone your accounts department all I get is a recorded message saying my account is in arrears and the call gets cut, all attempts to reach you via e-mail result in no response from you at all.<br> <br> I am loosing patience especially as you are not making any effort to help