When I was getting a PC upgrade, I explicitly told them that I had already handled backing everything up (as they repeatedly said I needed to do). Most of my projects are synced with our version control, so I have a projects folder with a few hundred GB in it that I didn't need to explicitly transfer to my new PC (I would check out projects as I needed them). I wrote in the ticket that they didn't need to transfer any files, I had already handled it. And I told the IT person who took my old PC. They said my new PC would be ready the next morning.

Lo and behold, it wasn't. I called and asked, they said they were still working on it. The following day, I went to pick it up and the IT person explained that it took so long because they had to transfer over hundreds of GB of files. And they reminded me that if I had been using OneDrive, I could have had it a day sooner.

You know, because they had to copy over my files. That were already in version control. A system they admin. And that I told them about like 5 times. After they said they wouldn't be responsible for file transfers.

Ah well, guess I got paid for their ineptitude. I wish this was the worst they've done, though.