I agree, making a threat is really not a right 
thing to do, it only make the person making the 
threat look as low as the seller if not even 
lower, in my opinion, even lower, sorry

I can understand why some times dealer doesn't 
respond, many time a dealer may be going to Japan 
for a few days or be out of town, and not every 
dealer announce that they will be in Japan for a 
few days and will not respond to e mails, don't 
think so.

In this case, A's cel probably is either did not 
want to deal in person, so he ignore the e mail, 
or he just doesn't care, either way, he should 
have just respond, and not making a lie.

also what if someone make a few mistakes in the 
past, I think he already got more than what he 
deserves, hope he can do the right things from 
now on.