I only received an account in November 2017 from ADT for August 2016 after I gave them written notice in June 2016 that my house have been sold.

It was one of the worst experiences I have ever had in my live, threatened with attorneys and all that. so I just paid them to get them of my back. Please if any one read this stay away from ADT they conveniently loses your notice papers and make you pay a year later.