For reports of scammers using other people's callsigns. Remember that any callsigns listed in this forum are likely innocent bystanders (subjects of identity theft) and, thus, are probably not guilty of anything. For bad transactions with verified ham operators, use the Feedback Forum instead.
Today I got at least three requests from hams asking me to verify if I had contacted them. In all cases it was NOT.
If anyone contacts you claiming to be N7KR, you need to verify that their email address matches mine on the QRZ Call Look up page: https://www.qrz.com/db/n7kr