ADT Unacceptable service

I submitted a complaint in May, in 7th June Tumi from ADT called, ***, confirmed the mater will be addressed and is resolved. Today i received a SMS that i owe ADT money when the services should have been cancelled. Does no one talk to each other at ADT. 5 months later and the matter is still on going. I can safely say that i will not be paying for services that i did not enjoy. ADT I am begging please can you resolve my matter with written confirmation as this is sickeningly to think that you quick to take my money but rendering service for the payment is non existent.