Oh, I get that. I also work IT, and part of my job is support. What I hate is the waste of my time due to someone else's poor planning.
We just moved to a new system and it includes a reporting tool for users, meaning, don't come and ask me to run database queries for you. We ran a lot of customized reports out of the old system, and part of the migration over the last few years has been around these queries; getting them into the new system, getting users to understand how to find what they need, etc.
We had literally dozens of meetings and conversations around these stupid queries, which ones needed to migrate, which ones were no longer needed, which ones needed revised, and none of this was my call, because I don't use them. They do.
We went over this, and over this, and over this, again and again, determining all this stuff. Sign-offs left and right, and not four days after we went live..."I need this query ASAP!"
"Sorry, it didn't migrate. You signed off saying it was obsolete."
"What?!?! No I didn't! This is a regulatory requirement!"
"Well, here's your signature, saying the report was no longer needed."
"That?!?! I didn't read that! I was signing crap left and right, you can't expect me to read everything I sign, I'd never get anything done!"
Something like this happens pretty much weekly, and it happens because IT management lets them get away with it. There's never any consequences for being a dumb shit.
"There is no bad weather, only bad clothes." - Unknown