Almost a year ago, I had Vivint install a security system with video camera monitoring. After a couple of days I called them to have the system removed because it was causing interference & causing my internet not to work. The Vivint Technicians came, removed their equipment and left the junction box wires disconnected. When I asked them to reconnect the wires as before they installed their system, he said the don't do that. He also chipped of the corner of my brick & shorted my Doorbell wires as he was removing the doorbell camera then laughed as he saw a huge spark. They left huge holes in my wall where the Video Screen/ Keypad was mounted. After talking to Vivint Sales about this issue, they didn't seem to care about Customer Service and any damages or inconvenience they caused. I had a working Alarm System before having Vivint install their system and now I don't have any working Alarm System. Their Technicians Attitude was very Unprofessional and I just want to warn everyone of their Horrible Customer Service.