Imagine being on a project where 10-20% of the target laptops will be done within one hour, but the rest will take a full day to backup, re-image and restore.
Now imagine the project managers sending out an email to the users that only lays out that best-case turnaround.
Finally, imagine being the only tech on the team that has any kind of comunication skills and being made client liason and having to explain to that 80-90% that no, their laptop is not done, and they will get it at the end of the day, or maybe tomorrow.
Bonus: The users in question are all public union employees, meaning they won't de disciplined for anything short of theft ore violence.
My job on the project devolved to 10 hours a day of taking shit and abuse from people who'd been lied to by incompetent managers.