I just remembered this one!
When we moved to Hoggetowne in 1995, we could not get a number till after we had moved to the house. Even though we had purchased the property earlier, we had to physically be living in the house and having an actual telephone device. So we got one like the day after we arrived.
Almost immediately, we started receiving phone calls for a "Dr. Keaton". At first, we were not sure if they were trying to reach his home or office. But then we also began receiving phone calls for him asking by his first name. And for "Mrs. Keaton". And for his daughters "Mallory" and "Jennifer".
I looked up the phone number for "Steven Keaton" in the phone book. Neither his house number nor his office number was anywhere close to ours.
The calls tapered down over the next two years; but they did not quite disappear...
Until one day in 1997, I picked up the phone. And a male voice on the other side says: "Hi, this is Dr. Keaton. Have there been any calls for me?".
I told him that in the nearly 2 years we had owned this number, there had been a few calls for him- but that my family had had this number since midsummer 1995. And our surname is not even in the same language as Keaton.
Well, he got very huffy. He told me that we were supposed to get messages for him and call him to tell him that people were calling for him! He said our not doing so had cost him a lot of business due to lost patients.
I was just a teenager at the time- so I got quite scared. I told him that I was going to put my father on the phone. But by the time my father got a hold of the phone, Dr. Keaton had hung up!
We never got any calls from Dr. Keaton again. Nor from anyone else asking for Dr. Keaton or Mrs. Keaton either. A few years later, someone did call asking for Mallory- but it turned out to be a classmate who was trying to reach another classmate by that name and had dialed my number instead.
AFAIK, one is not required in any way to do so. Let alone for a stranger.