Well, he did send an email, two days ago, but I didn't see it, as there was something wrong with the server.
According to my son (aged 17) he knocked on the door and called out, but when he got no reply, he just let himself in. Clearly he had come prepared with the keys.
My son, half asleep and thinking that I was in the flat and dealing with it, didn't get up (it was 9.30 am and he was on holiday) until a woman half pushed open his door. When she saw there was someone in the room, she didn't open it fully. She must have told the factor, who then called to my son to get up and get dressed so that they could come into the room. Which my son did, very quickly, and only just before the door opened fully to admit 3 strangers. No one apologised to him.
The agent was there because they were surveying the cracks in the walls, btw.
I am livid!
But aibu?? And what should I do?