ADT FIDELITY SHORTFALLS?

I give them, FIDELITY, one star as no star wasn’t an option! I cancelled my ten year service wth ADT FIDELITY and not once did they call and ask why.. They called me weeks later to ask if they can remove their panel from my premises and l was surprised by this! Nevertheless l said l’ll be back from my travels that Thursday and they can schedule an appointment with me then! That Thursday l had an appointment with Goodwood Patrols representative (whom was present) when an ADT tech pulled up to remove their panel unannounced! I was embarrassed and also angered by ADT unprofessional behaviour and told their technician no appointment was granted! I didn’t allow the tech access.. Today l received a bill of R3000,00 for DEFECTIVE ADT equipment! Remember they never enquired why l’m cancelling! We had numerous occasions where alarm was activated with no reply from them! I knew if they had to come out to have a look at their defective equipment callout fees would be billed and repairs to their very own equipment l would have to foot the bill! I won’t pay them a cent as they are welcomed to come and collect their defective equipment at my convenience!