If I could rate ADT as negative 100 stars I would. This is literally the worst company I have ever worked with. We have two houses with ADT alarms and on the two recent occasions (in the past 3 months) where we have had to get an engineer to come in as the alarm repeatedly kept ringing at 3am the response was appalling. It took them over 2 months to sort out the first occasion and we are still waiting for an engineer for the second occasion and it has already been over a week. You wait for hours on the phone to speak to someone who promises you someone will come and sort out the issue at a specific time. You wait inside all day and no one ever turns up. You call them and they say that the engineer cancelled (but they never bother to let you know). You book in again... they promise you the same again... no one turns up again. Only when you write in to complain do they give you a £30 voucher with M&S... what a total joke. I would NEVER recommend this company and as soon as we are in a position to change companies I will do so without hesitation. Anyone would be better than ADT.