I have a comprehensive service contract with ADT for cctv systems Twice this year they have tried to charge £480 plus for call outs for items covered by the contracts. Each visit was less than an hour They do not display or inform of likely call out charges. Once was their engineer called to carry out an annual service . I was charged for a supposed power surge!! This week the system failed Engineer identified faulty equipment. Again they have tried to charge I would recommend you avoid this company When the engineer completes his work you are asked to sign on an I pad that clearly only has one box for the engineer to tick accepting you will pay. The engineer will tell you if the box is not ticked they cannot close off the site visit. They are rogue traders