Least! Descriptive! Title! Evar! 🙄 😉 😀
Seriously, sorry that happened to you. That's really irritating. I understand the "don't ever..." thing. But it's reasonable for them to have the power cord if it could be at issue. They need to have a better inventorying system so that they know what they got from you, keep it together and quarantined from other equipment, and return it all back to you. That's not unreasonable to ask.