Face a Problem - Stole my steem

Steemit authority,
I am Saafir. I am from Bangladesh and I am a poor man. before few days I try to buy steem.

By managing money in a lot of trouble I bought about 166 steem. Suddenly this man Hive account@stecm steals all my steem. All of my hardship leads to this guy Hive account@stecm. I do not know how to hack my password. I have been able to recover my Steemit ID. after knowing the information.

How can I get my stolen steem of about 166 steem? I became weak. The Steemit Authority will pray this specially. I need to get more of this lost steem back. It is very necessary for me to back my steem.