Phoenix
Just like everyone here has done in the past , you screwed up . Granted you did screw up big time .........but since I know less about this crypto mining  stuff  than you , it could have easily been me . I would persist on chasing that rabbit down the hole , just to see how far you can get . It would be good to know if there is any way of cornering those pricks .
There will be more good opportunities in our future , so chin up , put brain in gear ...and let the hunt begin again .
Knowledge is power and experiences are one of our best teachers in life ..........I dont think any of us will forget this episode real quick .
If that one didnt sink home ...........I have shares in a diamond mine in Tasmania I can sell you at half price .......bitcoins only , ...........You will be the wisest man around after this transaction

Peace  and Grace ( and some laughter mixed in)

Pete