hi dear friends ..
i was searching for amazon gift cards and i found someone selling with discount 40%, i accept his deal and i sent to him 250 USD by blockchain.info and the default fee was 0.17 i think and he scamed me and didnt want to reply me or give me anything he told me i must wait to confirmation i told him its ok, but for my lucky the confirm is take lot times and he didnt received anything till now cuz its 0/3 confirm, and i talk with him in ICQ but he didnt answer me so i created skype and added him there i find him answer me

and when i told him i dont have money he blocked me ..
so please help me to cancel this transaction for god name

i dont have money really ...
this is transaction :
https://blockchain.info/tx/3451c43b1f8d2c5fcbefebd101e200525c6e4b93bea5041785b70a2bba97f24fand here some pictures from our conversation :
https://ibb.co/e6RAVa