Wayyyy back when the home line was the business line, we got a call at 2:10 AM once, from a rich old bird that has us cutting her grass. Seems she wanted the shrubs trimmed the following week. I asked her why she was calling at THAT hour??
She was Acapoulco, and it was 11:10 PM there, and it was cheaper to call after 11 PM.
The home line became our business line (and still is the main line into the business) and we got an unlisted phone ordered the next day.