We are on monitoring only with Phonewatch. Some time ago, the alarm kept going off when we went out - it was the front door sensor. Eventually I told them that I would call out their engineer to service it. Hey presto, the alarm didn't go off again and I didn't call for a service. Now it has started again over the last few weeks. Am I being paranoid in thinking this might be Phonewatch trying to extract more money from us? Anybody have this experience?