And of course, there's always:
Me: "Good afternoon, @#$%@#$% command centre, how can I help you?"
Her: "I was told that the power outage in the data centre was repaired and everything was back online, is this correct?"
Me: "Well, yes, we've recovered from the power failure and most systems are back online, how can I help you?"
Her: "Well, you're absolutely wrong, I'm at my desk in the data centre and none of the lights are working, and I can't turn on my computer!!! You guys need to change that message on your phones right now, and get back to work on the problem!!!"
<queue puzzled look at my compatriot, who can hear this woman screaming at the top of her lungs into my headset>
Me: "Ma'am, which data centre are you in please?" <We do have several, although there are *NO* desks in any of them and certainly damned few user desktops>
Her: "I'm in the 8th floor computer centre at 888 #@$%@ street, in room *#$%^, and the lights wont go on, my computer wont go on and I'm pretty sure my phone isn't working either"
<aaaaaahhh!!!! Thats an outbound call centre phone pharm, not a data centre, aaaaaaaaaaand there *should* be a rather long banner hung on the doors about the building service and where the reps are supposed to go instead for the day>
Me: "Are you aware that the building is under power maintenance, and you are supposed to be across the street in 1 @#$%&^#& @#$%&# on the 9th floor?"
Her: "Oh, so it was you that told the security guards that lie!!!!"
We wont go into where I and my compatriots took this dear lady, but we'd already had a 4 hour power outage to deal with in our data centre that day and we were looking at about another 11 hours of work to sort out the fallout on a long weekend sunday. All I can say is that I was thankful for the hold button. She ended up across the street on the 9th floor with her co-workers about an hour and half later, but *ONLY* because we had a call from someone already there and managed to connect the two bodies to convince her that we were not "Utterly incompetent lying @$%^@#$%^s" Sadly for her, it ended up being her second last day on the job. Inbound calls were recorded all the time, and she got pretty darned foul.