I don't know

This phrase, along with other phrases seem to have been removed from the English language. Why is it so difficult to say? Really, it's not that hard, try it with me just this once "I don't know."

So I went into one of those big-box home improvement stores today - they are really all the same, this particular one has the initials of Home Depot, but it could have been Lowe's, I tend to get the same answers regardless of which store I'm in - my experience was very similar to numerous past visits, so this is not a new thing, it just pisses me off.

Lets say you work at a store, doesn't matter what kind of store, and a customer asks you "do you know how to perform brain surgery?" Why is the answer always "yep, sure it's easy, you just blah, blah, blah . . . ."

How come the employees NEVER, I mean never says "sorry, I've never performed brain surgery, but let me find someone that has, and maybe they can help answer your questions." Is it like some Japanese cultural deal where if the employee doesn't know the answer they will have to kill themselves right there in front of you to save face for making up some bullshit answer about some shit they know absolutely nothing about!

I really do wonder why this takes place at almost all retail stores?

I feel like Charlie Brown standing out in the middle of a field screaming at the top of his lungs, "doesn't anyone know the true meaning of Christmas," except I'm standing in the middle of this big box store screaming at the top of my lungs "hasn't anyone in this store actually performed a home improvement task!"