Can't spend hours on phone Had 2 window sensors triggering tamper alerts, or just going off inappropriately over several months. Police called once. Talked to support, set up virtual tech appt (won't send to house anymore, I guess). Virtual tech quickly agreed the sensors seemed faulty, ordered replacements and set up future appt to install and register in system. Helped me remove faulty sensors from system (unregistered them). Box arrives with just one sensor. Tried online chat, who couldn't help, gave me phone number to call, transferred 4 times, finally someone seemed to understand and ordered missing sensor. Box arrives with install kit, no sensor!! Another round of calls, got cut off once, second agent did not understand me at all, tried to help me troubleshoot, despite my telling him I've already had virtual tech appointment, etc. I had to hang up on him, he never got it at all. Now I have a future virtual tech appointment to install and register my one new wireless window sensor in my system, I'm hoping the virtual tech can order the missing sensor, then I'll have to have another virtual appointment to get it registered as well. I've already spent 60 min on the phone just trying to get the missing sensor. Not eager to try again. When I purchased system 19 years ago, promised in house service (which would have solved this in about 30 min weeks ago), but despite increasing fees, I guess that's no longer the policy. It sucks.

Look elsewhere Look elsewhere! ADT adds unnecessary complexity at every opportunity. They have 3 different websites you have to deal with if you get both the alarm system and camera system. Then if you sign-up for the auto monthly payment and ever change your credit card, the system can't handle the change becasue it's two separate bills but it doesn't tell you that (unbelievable). It took me 5 days and a couple calls with their customer service who barely speak English to finally get it all sorted out. With today's technological capabilities this type of account credit card modification should take 1-2 minutes but with ADT it unfortunately takes days and a tremendous amount of frustration. Soooo unnecessary! Wish I had gone elsewhere.

ADT specializes in locking you into a plan and forgetting about you. Ever hearse of the term "lock in." it's what keeps companies like ADT in business. They're banking on the fact that when you spend so much to have one of these alarm systems installed, it's very difficult and expensive for you to switch to another provider, which means you'll generally remain a customer, no matter how bad the service is. And as others have noted, it is awful. They recently sent a freelance contractor out to replace the wireless system panel in the basement from 3G to a more up-to-date cell communication method. He botched it and a few days later, all the alarms started going off at once. I called ADT and they said they saw nothing wrong on their end and that they could send someone out in a few weeks to take a look. They could literally hear the alarms blaring in the background (the decibel level was horrific, and I had to go around and rip the wires from the units to silence them). Then I kept getting calls from an ADT system over and over saying that there appeared to be something wrong and to call them. A few weeks later a technician came and acknowledged that the guy had screwed up the installation. They redid it. Then recently I had a problem with one of the smoke detectors and a technician came and said I should order replacement batteries from ADT because I was on the free battery replacement plan. This had been the case for years (25 to be exact). But when I called ADT they said the plan did not cover batteries (which cost $18 apiece -- not exactly cheap). Previously, I had spoken to a customer service agent to set up the appointment, and they too said I was covered under the battery plan. So now two representatives from ADT have said I'm covered and one said I was not. How bad is ADT's computer system that you get such different answers? Also, when I do replace batteries myself, the alarm goes off but I don't hear anything from ADT. They used to call to make sure there wasn't a problem. Now, nothing. This company is horrible.

This company is absolutely horrible… This company is absolutely horrible never sign up with them. Their service is impossible to cancel. The phone agents openly lie about their ability to cancel things and claim they need to send you to another department. Then they basically hope you will give up after a couple hours on hold. Their price has increased steadily for the past several years and it is flat out not worth it anymore. When exploring security companies overlook this one and go another you will be doing yourself a bit favor.

Impossible customer service Can't log in to MyADT because it wont take my passwords, and it wont send me a password reset via email. I also can't remember my verbal password so it's impossible to access anything. I called and the guy walked me through everything as if I was extremely dumb which resulted in me staring at a login screen which I can't log into. They won't just reset my password, and they've increased the monthly payment twice now. I want to cancel, too but it's a whole ordeal and I'm stuck in this contract for two years now.