Unhappy ADT client

My alarm app started malfunctioning on Tuesday, i triggered the alarm to get assistance and was told to contact my installer. I contacted my installer and he advised what i needed to do to fix the problem but it was never sorted. I called the next day to inform the installer that my issue was not resolved and he advised that he was not feeling well so i need to call the office, it has been 2 days trying to call the office with no success. Their auto response is also not helpful because whe you cancel armed response, they still come and i was told that i woll be charged if they come for more than three times.