ADT PARTHETIC SERVICE

we have had four break in at our premises under the watch of ADT since joining them. we finally decided that we do not want their service anymore and we gave them a month notice. we even called them to confirm that we want them to come and remove their radio which they promise to do. they have not done so despite our numerous calls for them to come. what is even worse is that they put a code on our system and have failed to give us the code. they say this is a security code which they can only have. granted, but we have cancelled their service so they must come and remove their stuff. they tell us we must pay them a call out fee of R700 for them to remove the code. I say this is nonsense since they didn't charge us or tell us this when they put their code in. their service is pathetic and now they are acting like entitled kids on our system.