Last time JWs, two guys coming directly from Utah or somewhere near, knocked at my door was perhaps forty years ago.
They rang the bell and "Please, do come in, have a seat… do you want a coffee?" said I.
Astonishment from their part.
They started their sermon, learnt by heart of course, … in italian.
"Please speak English", said I.
The problem was that they apparently learnt the sermon just in Italian and were embarrassed to go on in English with an Italian…. after a quarter of an hour they quit.
What a pity, for me in those days it was an unexpensive method to practice my English…