Being billed for a service 4 months after canceling

<p>I cancelled my ADSL because of the high price of the service but still am being billed for this.</p> <p> </p> <p>Why is such a simple request so difficult for the team to see to?</p> <p> </p> <p>Absolutely appalling service. </p> <p> </p> <p>I demand someone call me to get this rectified as soon as possible.</p>