I don't want to do it myself. I don't want to become part of this. But he will be banned by tomorrow I think. Someone will report him or even more than one.
Why act so childish over someone insulting you? He insulted you, and doesn't want to back it up. Just leave it be, no need to pursue something so small on a chess site.
No offense guys, but that's acting really childish. If he doesn't want to play you, he doesn't. If he believes you are thick, and has you blocked, it's to prevent further consultation such as what you are trying to start. Suck it up, act your age, and let it go.