Appalling service from Fidelity ADT Security

ADT Security (Atlantic Seaboard, Cape Town) sent two technicians to my house to activate and install an alarm system. One of the technicians excreted in my house and didn't clean it. When I confronted him about it, he admitted to having done it but didn't apologise and became quite stroppy and rude with me. The technicians left without completing the job. When I informed the ADT consultant who had presented the contract to me, he advised that he would get the installation manager to contact me about what had happened. I had to follow up with the ADT consultant before the installation manager eventually called me and his response was weak, to say the least. Both the ADT consultant and the installation manager assured me that they would send different technicians to complete the job. I had to call ADT several times to remind them that a booking needs to be made for the job to be completed. Eventually, a booking was made. But on the day that the job was booked again, the same technicians arrived. I had to contact ADT again and wait about two hours for a different technician to come. No-one at ADT including the installation manager could provide a satisfactory explanation as to why the same technicians had come to complete the job. In fact, the installation manager became stroppy on the phone with me and suggested that I try to procure an explanation from his line manager (district manager) who he said would contact me. I have yet to receive a call from the district manager. When I tried contacting the ADT consultant, it appears that he has blocked my number from his phone. I did not expect such appalling service from a well renowned company such as ADT, which is charging me in excess of R10 000 for the job, not to mention the monthly fee that I have to pay for armed response, additional costs for equipment etc. and all the telephone calls that I have had to make regarding the above.