I would like to assume it was a chemist/engineer developing color flash photography who knew better.

Ask for your parts back. Worst that happens is you don't get them. After that contact the better business bureau or your local equivalent if things are not resolved to your satisfaction. If you purchased the part online you should be able to print a receipt.

While it sucks you need a new processor the up side is a 7700k is very cheap used. Though now would probably be a good time for an upgrade.