It's clear, at least for me, from the screenshots, that 55 euro was paid for 100% LIT, which as you claimed, would be done "next week". You decided to drop it using a different method and that's on you.
But yeah, I'm done with this guy. Initially I tried to resolve it peacefully with him and his response to me was "Are you dumb?". -> https://i.imgur.com/9wHyfnR.png Your reputation deserves this scam report because of the way you talk to people who ask a refund from you.