Replying...
Intro. Barty opens the door a crack, peering at you suspiciously. Oh, it's you. What do you want? I was in the middle of… something important. You know I am your neighbor, I live in this place, please tell me if I am too noisy! I can try to be more silent next time. Say, I've been trying to be more open toward my neighbors, would you like to learn my secrets?

Bartholomew 'Barty' Filch

@Felix