Horrible service

I have experienced terrible customer service when it comes to ADT armed response. In December an alarm went off at my premises they called me and i advised them to send a vehicle as i was not home , i immediately left where i was and went home i waited and no vehicle arrived. I called to find out what happened they said they will escalate and no one got back to me. My recent incident was on Saturday when a panic button went off we requested a vehicle be sent out as my son was alone at home and they never sent a vehicle. I called and spoke to Penelope who advised she will escalate to a supervisor no one called back. I called ADT on Monday again and spoke to a supervisor Busi who couldn't even apologise for the service received all she said was she will transfer me to cancellations. I then spoke to Tumi from cancellations after my e-mail was sent i specifically told her i want this cancelled with immediate effect. I am not on a contract with ADT as i only have the armed response service, she said an investigation will be done and she will get back to me on Monday. When i spoke to her this morning she tells me i must give 30 days notice and I am liable to pay for March. So i am been forced to pay for a service that ADT is not providing. This is totally unacceptable. She then dropped the call while i was speaking to her. I am not sure if ADT has so many clients that they no longer care about customer service. I want my money refunded as i refuse to pay for a service that does not exist. This is ****************.