Telkom Charging Me 2Months after Landline Discx

I requested my landline be disconnected, was told that I first need to disconnect my webafrica service which took a month, then another month for Telkom landline to disconnect. Line disconnected on 05September'15. Telkom charged me for after this period, I was told I will need to pay the excess amount then I will be refunded - which is ridiculous in of itself. I called Telkom cust service on 19Oct spoke to Karen who told me matter needs to be referred to credit mngmnt team and I will get a response in 7-10 days. I called today after getting no feedback, on 05Nov, and was told by a supervisor Liphelo, that I have to give it another 6weeks from 19Oct for feedback, and there is nothing they or I can do - great cust service. Also that my credit rating will be affected but Telkom will reverse any credit rating action once the matter is resolved and I am 'found to not be at fault'. How gracious of them. I am disgusted with the service, customer service and process. I need help, can you help me TELKOM? I DO NOT WANT YOUR SERVICE LET ME GO AND DO NOT TOUCH MY CREDIT RATING!