Unauthorised debit order

<p>I cancelled my contract with Chubb Security on the 1 October 2013. And on the 29 October their technicians came to my premises to remove their radio. Ever since the begin of 2014 my account gets debited by Chubb Fire and Security. </p> <p> </p> <p>I personally went to their offices a numerous times to complain about the unauthorised debit orders, and they promised to resolve the issue. But they have not sorted out the matter, instead my account is still being debited by Chubb. </p>