Debit account again after cancellation! Wow!

One start this company does not deserve - I have cancelled my services on the 19 September 2022 , Fidelity insists to debit my account again on the 26th October for services that I did not even use , the explanation given is that this is for arrears which I don't know how this is incurred as I have given sufficient time to cancel , my alarm does not even work , so for this company it is correct to pay for something that you are not using , they even tried to send me the recording of when I logged a call to troubleshoot the alarm in which the technician decided to come thru at 12:07pm when I have requested for a morning call, this is the worst security company that I have ever dealt with , there is a saying in business if you loose 1 customer , you will loose 9 potential customers , definitely a customer lost . I would not recommend anyone to use this service.