Adt service is shocking

ADT makes it extremely difficult for clients to cance the services. I’ve done my 3 years and requested cancellation. The person I spoke to said it would be cancelled and I have enough notice. The next month I was billed and when I called back, the person I spoke to said they couldn’t find any record and that I had to prove I did the cancellation. Your website is also terrible, it doesn’t list how to cancel, doesn’t offer an option to help with cancelations. It’s contradicts what the TCF act requires! I want my services cancelled or I will be knocking at the ombudsman’s door to investigate this!