The first step is to localize the individual.
The first step should be contacting W0AFX, and explain what happened.
Ask W0AFX if someone was operating this call "under supervision
" that particular instance.
Once it is established beyond doubt that it was a rogue operator stealing someone's call, you can proceed with contacting the FCC, locating, tracking, etc...
which is mood at this point, as it seems that it was a mistaken id:
You probably mistook x for s in the callsign,
Jay W0AFS IN PLATTSBURG, MO.
I know many hams who give callsigns in the order that you mention.
Your contact on jan 10th on 17meters is in his log on qrz . com as follows
K7EOS 2016-01-10 17m SSB DN18UQ36 United States Wade E Brooks
W3RFQ 2016-01-10 17m SSB FM18ox United States KENNETH G MC KEE JR
KC4BW 2016-01-10 17m SSB FM19pa United States THEODORE F KOSS
N2LJR 2016-01-10 17m SSB FN13ee United States RENE LATOUR
I have done so many times that I am getting efficient at using qrz . com to decipher my screwups.
... my 2 cents ...