the following snapshots show what I said.
BTW. the transaction is confirmed 55 times, he still send nothing to me.

http://imageshack.us/a/img404/258/pic2bh.png
http://imageshack.us/a/img16/469/pic1ul.png
http://imageshack.us/a/img62/9234/pic3ou.png

He didn't reply me anything after that.