Yea, it makes generally mild-mannered me wish to give them a gob-full when that happens.
What has stopped me in the past is that it has always been people I really wouldn't want to talk to anyway, and they could have claimed in each instance that they "just did not see you" as I never actually "Locked eyes".
I have made some talk by starting off the conversation, which I made brief out of choice.
I wonder exactly what to say to someone like your acqaintance, I am thinking of something like " I was going to shun you, but I am more Chrisitan than that, so hello and I hope you are well".