cancellation of adt account

<p>trying to cancel adt subscription service from 7/5/2016</p> <p>called in and told them we would like to cancel they said</p> <p>we should email cancellation letter to ***</p> <p>20 emails later still no response</p> <p> </p> <p>what should i do</p> <p>it very easy to get a subscription but very hard to cancel</p> <p> </p> <p>thanks</p> <p> </p>