DEAR ABBY: I have a lot of health problems and need my rest. We have even disconnected the doorbell. So why do people ignore the "Do Not Disturb" sign on the front door and knock anyway? -- DISTURBED IN EUGENE, ORE.
DEAR DISTURBED: Not knowing who's doing the knocking, I'm guessing they're people who are desperate to sell you something. Certainly no friend would behave that way.