ADT subscription cancellation is being processed

I have had ADT security for a while even though I have lived in a security complex. Being a single woman, I felt it was important to have personalised security. However, I noticed time and time again that when I had my alarm go off, ADT response time was pathetic. Things have been difficult financially and I requested a cancellation of their services. They instead assured me they would lower my subscription 2 months ago. There is no direct line to communicate with agents, and they refuse to give you anything in writing. I have still been charged the higher rate. I was at my wits end and insisted an agent call me. An agent did and he asked me to send an email instructing him to cancel my subscription, which I did. It's been 9 days and I still have not had a response. I sent him another mail and also copied the mail to ***. I just got an automated response and my subscription is still not canceled. I cannot afford this and I am afraid that ADT will just charge me again. It really should not be that easy for all these companies to just take our money. I definitely will never use ADT again. They are NEVER ALWAYS THERE!