Telkom *****ing my money - AGAIN

I used to have Telkom ADSL at my previous address. I had the line for a period of almost 10 years. I moved last year taking occupation of my new house in June/July. I requested a cancellation telephonically and request that all services except for my Telkom LTE to be cancelled. I received emails from Telkom with confirmation of the services which I wish to cancel. Over the phone I confirmed that this included all service except for the LTE and I was advised as such. Now I am receiving bills from Telkom telling me that I owe them for 3 month for the line rental. I cancelled all services why were you billing me for the line rental? Why would I keep the line at a property which I sold? I am fuming at the moment, I am with OpenServe as my Fibre provider now and I am actually looking at cancelling that and moving to a different line provider because I do not do business with ********* who commit *****.