ADT Account

I have moved from a property on the 10/10/2014 and requested ADT to move the equipment from one property to the next and nothing was done up until today i haven't heard from ADT. Now there is people calling me from Creditworx demanding money from after 3 years and the system is not at my property. I am taking this matter further they are bothering me. I keep on telling them that i am not willing to pay for an account that i haven't used.