Bad vodcom & bad service. Cancellation issue.

<p>How is this possible where I received a letter from you about a account that I cancelled when it was done. I did this in writing as well as over the phone and is seems to be a recurring problem.</p> <p>If it wasn't one issue I had with the company from billing faults it's a cancellation that was done when the contract finished and yet here we are. A threatening letter from you for something that was cancelled as it was out of contract. So why is their a out standing amount?</p>