Unauthorized contract

I took out a media pad contract with Sell direct in November 2014. An additional contract was added on my account without my knowledge. I have been trying to sort this case out since.They have now deducted more than R 1000 on my account that they need to reimburse me for as this was from the unauthorized contract. I went to Telkom who said they will sort this out after multiple cases logged they still have not cancelled this from my account, this is the Kolonnade branch as well as multiple consultants including one manager at the call center. Today I spoke to a Telkom consultant who was very help full from the Woodlands branch (thank you for that), he informed me that I need to resolve this issue with Sell Direct as they do not handle queries for Sell Direct.I tried phoning Sell Direct for at least an hour now and no one is answering any of the lines I phoned. I am very unhappy with the service given as they are always very good to follow up if they want to sell a contract to you but afterwards no help is offered to sort this out!!!!!