Roman Basargin

I was contacted through an investment website by a person named Roman Basargin. He told me he was a broker and that he represented the Interros group and Vladimir Potanin. He told me he wanted to invest in my project after he had reviewed it. He sent over documentation, contracts and letters of intent that looked legit. I also did my own research and found that he was on LinkedIn and others like it.
He asked me to wire a surety bond to him. I got a username and password so I figured it would be okay. I was supposed to be able to see the money in an account in China. I tried to transfer the money from the Bank of Dalian in China. But I was told that I had to pay an additional surety bond fee! Then they told me the China Bank regulatory commission had frozen the account. This is when I thought the whole thing was a scam.
He said he was moving back to Russia and that I would be contacted by a new account manager. I haven’t heard from anyone in a month. I email Roman so many times every day, but nothing.
Has anyone else had similar experiences with him? Or the Bank of Dalian? Please give me any info on this person. I hope he gets caught and no one else is sucked into his scam, where he screws over innocent people.