ADT can't stick to an appointment time

I had an appointment booked for Wednesday morning specifically between 7am and noon. ADT eventually arrived at 12h30 which didn't suit me. ADT technician Lawrence gave me attitude saying that they had 3 appointments that morning and thats why they were late. He said he'd come back on Thursday morning at 9am. By 12 noon he still hadn't arrived. I phone ADT at 12h45, and the call centre agent said that Lawrence didn't have the right equipment, so he decided that he would just come on Friday. <br> <br> No one bothered to phone to say Lawrence wouldn't be coming, nor did anyone phone to check if Friday suited me! I asked the call centre agent to put me through to the manger, he reluctantly said he would, and then kept me on hold for a further 13 minutes without coming back to me once, before I decided to end the call.<br> <br> Shocking service ADT!! Rude employees all around.