Totally ignoring my emails - *********** staff

We are not ADT linked but have an old alarm that ADT once installed. This alarm just died on us. Had to pay R600 + first to get a call out done. Had to pay another R930+ before the technician would go back and repair the fault he had found. I asked the call centre Mr Khosi Ngake to make sure that I spoke to the tech as I wanted the alarm code reset as well. This did not happen. He got it working again but we cannot set it. I phoned again stating this had not been done. I get the message that they cannot set it . What have I paid approx. R1500.00 for if the alarm cannot be set? Khosi said he would try and resolve this for me and has since ignored all my messages. I am now fed up with the lack of response and the total disregard for customer service. The tech should have phoned me like I asked several times, and if the alarm could not be set he should have said so before I paid the extra money.