I find it difficult to conceive of a bunch of people constantly harassing a home owner (Frank) for all this time because they wrongly believe the house to belong to someone else (Frank's dead father's ex-girlfriend). Are they related to this woman? Is she disabled, financially up the creek, homeless or troubled in some other way so that they feel sorry for her? How does anyone have the time or the inclination to carry on in this manner? I have never heard of such a thing. It's terribly un-English! Perhaps it's just a conspiracy to wind up someone who has wound them up in the past – now that is believable.