ADT holding my alarm system hostge

I am trying to cancel my contract with ADT because I can no longer afford their price hikes.<br> <br> The new company I am going to say that they cannot alter the security system as ADT have changed the installer/master code from the default.<br> <br> ADT still have to collect their radio transmitter. They refuse to set the code back to default while the tech is here to collect the radio. They are telling me to pay R500 for the tech to come out a second time to push four buttons on the panel. If the tech is already in my home standing in front of the panel why must I pay an additional R500 for his finger to push four buttons? <br> <br> I can only assume ADT want to gouge every last cent out of me to punish me for leaving. Now I have a security system that I own but can't use because they are holding it hostge until I pay them R500 I can't afford to get control of my own system back from them.<br>