"When you apply for a mortgage you are informed in advance that it might be sold. In fact, when I got mine I was told it would be sold. This information is given to every applicant as a legal requirement and people who don't like it don't need to go through with the application."
Ah yes, the good ol' American practice of victim blaming: "Well, we specifically told you we'd screw you over; look, it's in paragraph 151, subsection 15, article G of the document you signed as we hovered over you impatiently that time you came in when we didn't tell you we were closing 10 mins after that appointment we setup the day before the deadline to sign... so it's really YOUR fault!"