Bill sent to attorneys-now have to pay double

I cancelled my account in October and was not informed about the outstanding amount. When I eventually received an sms from the attorney, I contacted Telkom only to be told that I needed to settle with the attorney. Now I have been asked to pay almost double what was owed. This seems like a **** between Telkom and the Attorneys. I am really, really upset because when I cancelled the contract, I had provided all my contact details to to TELKOM as stipulated, and had not received any notifications. Surely there should be a process of trying to each me electronically as I had informed them of my intention to move.