Wow! That's so fucked, dude!
Can't believe that happened to you!
How EXACTLY did it happen?
Did you put your username and private key into some link?
I just want to know so as to avoid it myself and so anybody reading this avoid that same mistake.
Hopefully, they'll get a comeuppance somehow and you'll find justice.
If not, may your regrowth be strong , easy and flowing.
Blessings mate..