I woke up this morning to find that a reversal of a transaction occured overnight :-(
I didn't hit refund on the transaction.
The person was unverified and the email has already been sent

Not sure what to do

Was it a payout to you from a site?

If so, what site please?

No
It was an advertisement

I can't give the site. But if other webmasters want to know a little more. There is information I can give that will alert them to without giving out an email address or personal information (the site they were advertising)

I haven't received notifiaction from Paypal in relation to it.

You really should get program owners access if you are a po. There has been someone doing this alot lately, and it has been discussed in the po folder.

I don't have access. I called Paypal and it is fraudulant

that is so sad