Incorrect Billing for a line that I DONT HAVE!

I have so many complaints I don't know where to start. 1. Telkom Billed me for I line that I don't even have (I don't even have a telephone or a line), I have proof of a contract that I cancelled and I even have a letter from my lawyer and still NO SERVICE or respond from TELKOM!! 2. I am blacklisted, how are they going to correct it. 3. What is the point of a complaints department when they don't respond to complaints. 4. I did not receive any statements or calls that informed me of the payments for the line that I don't have. 5. It shows you how ******* are the service providers and the system in South Africa.