I have crossed your video in YouTube and as I was watching the video I felt like it was happening to me, It was very scary, I cannot even imagine how you felt. I am really sorry.
However, if you feel that battle is over, then so be it. But if you feel like you could do something else, do the following ; Request the IP Address that Bittrex has, then go to www.iplocation.net if you are lucky you will get more information about the server location. Then, gather all your evidence and report the cyber crime here: www.actionfraud.police.uk
Please do it because they may not get them right now but this crime can be linked to another one and if you do your part they will get them sooner or later.
Best Hive account@cryptoiskey