I Get Increase Notification Instead of Cancellation Confirmation in Writing

I have cancelled my contract with adt. Given my months notice. They took the premium and well next month or on the 25th of September its supposed to be, no more adt debits. However while i have sent my cancellation letter or email twice, i have yet to receive a cancellation confirmation at all just people calling me. I get my statement and get this stupid notification of a increase in the premium instead. My alarm hasnt worked for mnths, they havnt responded in months, August weeks back they even broke into my house. Still no cancellation confirmation just increase notification. Next weekend i will make sure i go to my bank and personally cancel this debit order. Should you people say i owe or even try blacklist me... After i followed the law gave the 30 day notice, after 5years of being a customer who never missed 1 premium... The NCC wont be enough, taking my money after i lawfully cancelled and acting like i ddnt meets the elements of ***** nobody can be instructed to commit a crime... Don't think cause your a company theres noway to hold someone personally liable