I have been with ADT for just over 1 year, in that time I've had multiple issues with my alarm system and trying to sort things out has been a nightmare, there customer service has been one incompetent staff after another, lieing to me over and over again. Three weeks ago one of the outdoor sensors on my drive kept on going off in the nite, I called them at 5.30am and was told an engineer would be booked in for 10am to replace it, at 11am I called them and was told he will be over after lunch (not given a time just told after lunch) I called back at 4pm and was told he had been delayed and would be with me by 6pm, then at 6pm I was called and told he now wouldn't be coming cos he didn't have a new sensor on his van! and was told an engineer would be over the next morning at 10am. The engineer turned up and didn't have a clue what the problem was, I told him the sensor on the drive needed to be replaced, he then replied 'Sorry mate I don't keep them on the van' I WAS NOT HAPPY! he told me he would order me one which should arrive in 3 days and he would pop back and fit it. A week later it hadn't arrived, so I called them 3 days ago and told them it hadn't arrived, and was told the engineer would call me back with an update where it is. He never called so I called them today and was told they could see he put the order in but the parts department had no record of the order, so the only way to order it again is via the engineer, so I was put on hold while they contacted the engineer to re order it, after a 10 minute wait, I was told the engineer couldn't re order it as he doesn't know the part number (I asked the lady on the call, how could he have ordered it before if he didn't have the part number, and got a reply of 'hummmm I'm not to sure') and was told they need to find out the part number to re order it and someone would get back to me within the next 3 working day! so after a 50 minute call of more lies I basically have no idea when or how I will be getting the new sensor, I asked to speak to a manager and was told I couldn't speak to one but one would call me back in 72 hours, absolutely unbelievable. I'm shocked that a company such as ADT have such bad customer service. I now wish I would have never used them and would definitely NOT recommend them and now going to cancel my contract and try and find a better company which won't be very difficult at all.