Sorry sir i want to ask, if the transaction that I do this in bulk, of course I will try to restore the bitcoin.
What do you think I should do to find witnesses of fact in the matter?
and if such transaction errors resulting from trojan virus,, is there any way to get it back that bitcoin???
thank you so much?
Bitcoin payment system is irreversible, not much you can do if the seller indeed cheated you. The only thing you can do is to sign a message from the bitcoin wallet you used. Also run a scan with an internet security suite to check for any trojan or keylogger in your PC.
It's a good thing that you send him a small amount. Not much else you can do once the transaction is confirmed with many confirmations.