darken (one's) door
To visit one as an unwelcome guest. I can't believe she darkened our door and stayed for hours, even though I clearly wanted her to leave!
darken someone's door
Fig. [for an unwelcome person] to come to someone's door seeking entry. (As if the visitor were casting a shadow on the door. Formal, or even jocular.) Who is this who has come to darken my door? She pointed to the street and said, "Go and never darken my door again!"