He made up his story like this and now blockchain transactions won't prove anything here
Than why is it so hard for you to show everyone blockchain transaction how you sent him more money than you wanted, by mistake as you say.
I am not taking anyone side here and I am neutral, but both of you didn't show a single transaction proof, just bunch of telegram chat screenshots, that doesn't mean much to me and they can be easily faked.
He thinks that with a fake story he can deceive everyone here.
If he says he pays you $ 10 for each article.
Rest assured, he will pay you $ 5 after delivering the article!
Isn't this a scam?