Hi. Recently had some plumbing work done but there was a slight leak on one of the new radiators. Plumber wanted to come back on Friday and asked if I would leave key or what time someone would be home. I replied to say 4.45pm and he agreed the time. Moved heaven and earth to get home on time only to find he had attended early (no cars on drive), knocked door and asked my teenage son if he could come in to do the work. I feel quite annoyed, am I being unreasonable?