Technician leaves alarm in bad state

<p>I was told I needed a new motherboard for my alarm, and ADT originally arranged for the technician to come a week after I requested it - already a bad sign. Then on the morning of that visit we were phoned to say the technician was ill, and it was re-scheduled to today. </p> <p>Today the technician turned up and appeared to do a decent job, and then left. A few minutes I went out into the back garden and the alarm went off (even though it was not set). I phoned ADT to ask the technician to return to sort out the problem and they said the despatcher would get him back. after 1.5 hours I phoned again and got the same story - being assured that I would be called shorlty with an update.</p> <p>I am still waiting for that call and the technician to return. We are unable to go into our back garden because whever we do the siren is set off by our remote sensor, even though the alarm is not set.</p>