Called my bank, and you are right! ACH reversals can be made!
But I'll have to go to the branch in person, fill out a couple of forms, and wait ~10 business days to get my deposit back....
I still blame BitBox for all the wastage of time, and holding up of my money!!!
/facepalm
Where's the "scammers tried to help me, I didn't listen" meme when you need it?!?