Similar story. I had the pleasure of running a training class full of fresh meat on our ticketing system. Figure a class of about 20-30 people....on a Saturday morning.

Okay, fine, we're all getting paid.

I count them off, and give them the UserID/Password sequence (Literally UserX and PasswordX, where X is 01-99) to use....

or, that's how it was supposed to be.

Turns out, I have a class of logins that don't work.

Okay, no biggie, I work on a helpdesk, I'm training them to work on a helpdesk, I'll call our internal (offshore) helpdesk and see if we can't get this fixed up.

I put them on speakerphone in front of the class and ring them up.

"Hi, I'm trying to run a class, and it looks like I need around 30 password resets for [System], can I just send you the list, or how do you want to do this?"

I'm sorry, we can only reset one password per call, and the user would need to call in.

"So, to be clear, you want me to have the entire training class call you folks (remember, this is very off-hours) to have a training ID reset?"

Yes.

".......Roight! Okay then. Talk to you soon!"

I hang up. I just kinda look at the class, shake my head, and write the phone number on the white board.

"Okay everyone, we're in an empty call center, find and log into a phone, and give them a call to get your password reset!"

I give it five minutes, and then project my voice across the area they've congregated

"Okay, who here is actually talking to a human?"

one of the agents raises their hand, and I walk over and grab the headset.

"Hi, this is BornOnFeb2nd again, I probably talked to you a few minutes ago, are you willing to reconsider that list yet?"

in the the most defeated voice I think I've ever heard, the agent just said

Please make the calls stop.

Yelled for everyone to hang up, and be back in the classroom in 10 minutes.

I have zero doubt that I slaughtered that helpdesk's metrics that day. They probably had an abandon rate close to 80% that day, if not higher.