I don't know we can get back our transaction and get back our asset.
i think once our transaction are get in to the network, we can''t canceled it
Yeah you can't reverse the transaction OP needs to send a ticket to poloniex about his problem they're the only one who could fix this problem. It's still possible that they will help OP out but there's no exact time in getting a response back from them.i think once our transaction are get in to the network, we can''t canceled it