Telkom Bad Service

I have a complaint about the service and help that I have received from Telkom. My business closed October 2014. I instructed Telkom to close my account and to make a payment arrangement regarding the outstanding amount because the shop was bankrupt. I gave my details and explained that I wont have access on any landline and they should contact me only on my cellphone and email. I did not get a call back or email till now. I went twice to the telkom shop at Westgate trying to resolve my problem and spend more than a hour there on each occation with the call centre. No feedback or help after trying my best to resolve the issue. I have also discovered that Telkom is continuesly billing me and increasing the outstanding amount. I am very unhappy as I feel this is very unfair, unprofessional and ********* to do that. I have cancelled my services and closed my business end October 2014. The business is non existing there is no line or telephone in use. In fact there is a new business now with their own line in the shop.