Greater is Christ who is in me, than he who is in the world...
Satan likes to throw curve balls at us, its what he does best, and he always seems to know when it will have the most impact as well. but dont forget there is never any reason to be afraid of the devil, because he is already a defeated foe
Keep this guy on your block list and od what you need to to not get any further communication from him, but also list him up to the father that what ever spirit he is working under that he will come to a knowledge of God and what God is really about
Bless those who curse you, pray for those who persecute you
(Apologies while I can recall scripture I am not so good at remebering the exact reference)