Unprofessional Service

I installed an alarm system in my house on the 13th of December 2007 with several extras to ensure our safety. On the 15th of May 2015 I requested the technicians to visit my property to service my system seeing that it has been several years, and with the load shedding the potential for under performing system was possible. During the visit it was made clear by the technician of ADT that the original installation of the external wires was incorrectly done. The wires was not placed in a conduit therefore resulting in weather damage and several functions of the alarms system not working correctly. The technician, as per his job card mentioned that it was the fault of ADT and they needed to repair the problem. After a month I called ADT to confirm when they would fix the identified problem to which they rep**** that \I was responsible for the call-out as well as the cost for their installer to fix the problem". After several phone calls"