Never had a letter but we were called upon by JWs while staying at a villa in the Portuguese mountains of the algarve. Up a long drive, well away from the road. Two years in a row! I was tempted, second year, to tell them we were planning a Satanic mass that evening if they wanted to call back
I live in the middle of nowhere and they call. Once they called when a friend was round, he asked them if they had any colouring books. A document wallet with A4 line drawings of innocuous scenes like Jonah and the whale, King Solomons judgements comes out.
My friend stupidly asked the lady if she had any adult material to colour in such as unbelievers being assailed by pestilence and burning in eternal fire.
I stopped him and pointed out that the witnesses did not believe in hell, they compensated by believing in total annihilation of unbelievers and he could save his orange and red crayons for another day.
I interviewed two witnesses a couple of years ago, not for a job, just a vox pop interview in my house when I was bored.
The older ones have definitely heard all the jokes and insults, the ones you know and the ones you never would even think of.
The one thing they struggle with is thorough knowledge of the Bible, they only know what their own brand says and regularly misrepresents.
They would still be rocking up every two months if it wasn't for the blessed covid.
My neighbour says he considered setting up a nazi regalia shrine and inviting them in to admire it.