I live in a little flat that is attached to another property which is lived in by my landlord's son. I have my own yard and driveway separate from him. He has been coming onto my property and taking my bin to fill up with his rubbish. When I need to put my rubbish in it, I have to go looking for it (and sometimes can't find it) and he doesn't always leave me any room in it. Is he allowed to do this?