(For those not in the loop: if this is actual fraud then it means someone's credit card is being used without them knowing. Eg your grandmother's.)
Amazon: reported to stop-spoofing@amazon.com. I don't know if it's the right email address, but it looked like the only option I have to contact them if I don't have an account with them.
Paypal: no email address to report fraud to, they tell you to login and do a dispute. Except Paypal won't let me login today:
This does not appear to be skippable. The irony of them saying it's to "help prevent fraud" is not lost on me.
I don't own a mobile phone. I guess only mobile phones are allowed to report fraud, humans don't count.
Ebay: again no email address, I have to login and file a report. The only way that looks like it might work is to "report item" on the sales listing, but my reason isn't listed in their drop-down of options.
The closest I found was "stolen property", but then they say this:
Reports of stolen property on eBay need to come from a law enforcement official. This reporting reason is only to be used by law enforcement.
Wow, thanks. Useless.
I might just email their "email spoofing reporting" addresses instead as that's the only way I have of contacting them.
EDIT: found an eBay reporting form that lets me choose "The seller has violated one of eBay's policies" as the reason, then lets me choose other. I've submitted to that. Unfortunately it does not allow me to attach photos/scans and they say this after I hit submit:
We've received your report on <username redacted>.
We'll look into this and take appropriate action if the seller isn't following our policies. For privacy reasons, we won't disclose the outcome.
Please note that there's no need to contact us again. It would create a new report and prolong the process.
LOL. Sounds like it's a black hole to save costs. I have zero confidence they will do anything.