My name is Melvin Sillmon and we have been Comcast customers since 1988. Recently the hall motion sensor of my security system has failed and triggered a false alarm. I contacted customer service and arrange for a technician to come and check the problem. An Xfinity service representative made an appointment on Wed 8/25/21 for me for this Friday 8/27/21. I call to follow up on the appointment and no one could find the appointment. I have the time that I call for service. You can not speak to any supervisor to resolve your problem. You get an automated voice that screens call. My phone number is s734-891-7550