To extended your metaphor, we don't get annoyed an a neighbor knocking on our door to ask us a question, but we absolutely do not want some random stranger that

To extended your metaphor, we don't get annoyed an a neighbor knocking on our door to ask us a question, but we absolutely do not want some random stranger that's trying to get rich from knocking on our door as asking questions when they're doing it over and over and over all hours of the day and night.