Paying for no service

I was a long time happy ADT customer and, because of past experience, was not happy in the take over by Telus. A simple accounting issue (an increase to my monthly fee without notice etc) led to my suddenly not being able to set my alarm. On calling Telus support, I learned two things. My ADT system was apparently linked to a landline which I cancelled four years ago. This meant that while everything appeared to work my end; it never worked on the Telus end. Consequently, I've been paying these past few years for NO SERVICE.  Needless to say, this lack of Telus care in contacting ADT customers etc ..... well, how would you feel? In reading comments by other ADT customers, I'm not alone in these sentiments, some of which reference Telus' lack of experience in the security field when they absorbed ADT and other companies.  My example reflects this fact.  Enough said. I'm cancelling automatic payments and looking elsewhere