Here is the theory and instruction from the "slave":
*** w96 3/15 24 How Christian Shepherds Serve You ***
Before making a shepherding call, one elder phones and says, “I call on one family each month. Can I visit you for an hour or so sometime next month? When would this suit you?”
Suggestions for Shepherding Calls
• Make an appointment: It is usually good to make an appointment. If the elder plans to handle a serious problem, it would be proper to inform the publisher of this beforehand.(My comments: what a joke!)
Supposedly, if they have tried to call several times and/or left messages and the person doesn't call back to make an appointment, they feel they can "drop by unannounced."
If the body of elders have reason to believe that a judicial hearing may be warranted, they will continue to pursue meeting with the person even if the "accused" avoids them. This is called sending out 2 elders on a "fact-finding" mission. Supposedly, they should have enough information already to do so.
Just tell them it is inconvenient and say you will call them when it is convenient. I would never let them in if they drop by unannounced.