What to do when someone wants to report you for misunderstanding everything? (accused of scamming)

| steamname: the_007_remix
| steam3ID: [U:1:49161197]
| steamID32: STEAM_0:1:24580598
| steamID64: http://steamcommunity.com/profiles/76561198009426925
| customURL:
| steamrep: http://steamrep.com/profiles/76561198009426925

This guy added me for a trade and said that he would report me for a complete misunderstanding.
I tried to explain him many, many times that he misunderstood what I said, and yet, he kept calling me scammer and said that I would be reported.

there is a posibility that this guy is just a troll, my question is, what to do if I get marked and reported? I got screenshots of the whole conversation if needed.
the thing is, I want to prevent being reported and marked before it happens, can I do this?
-APOLOGIES if this shouldn't be a thread-

Thanks a lot for the reply.
and just to let it clear(just saying)
what happened was that i just told him to TELL ME what he wanted to offer for one of my knives(example: i'm offering my blablabla for your FT ST karambit blue steel.)
wich is actually on csgo2x, but the page is down atm. and he kept understanding that i wanted him to send his items in an offer and accussed me of "fail attempt of scamming", even if i told him many, many times that i just wanted him to type the names to think about his offer. nothing else
proof:
https://gyazo.com/1596955d8848aef19c5b110d8d1209c3
https://gyazo.com/69146ec2333f457f051893273ca66fb6
https://gyazo.com/e070e679f1d568da6d6476374809635d
i have the whole chat screen

the whole chat recorded. that was just the beginning*