To be fair, as a helpdesker I've had to spend a lot of time troubleshooting because the network team believes their systems are infallible. Even after proving it wasn't a desktop issue, being sent on wild goose chases is common.
I seldom get a "sorry about that" after a 5 minute troubleshoot and fix session by the network staff (after being pointed in the right direction by one of us) resolves an issue they've been loudly proclaiming was someone else's problem.
Oh well, it's Friday and weekend plans are afoot. Y'all have a good one.