Originally Posted by
veganbikes
Maybe they did I don't recall but not really a big deal in the end get the proper shifter it is not hard. I know you want a way out but a true professional is not going to recommend the wrong shifter unless it is some absolute emergency situation.
Just stop with this. As Kontact said - Shimano used to use the same 3x9 brifters on both 2x9 and 3x9 setups:
https://si.shimano.com/en/pdfs/si/6S...000-00-ENG.pdf
It's not a problem.