...They are incompetent (i dont think they're really scammers),...
I respect everyone's opinion. However, go ahead and tell the above to all the people with X+ years locked accounts after complaining that they can't withdraw their funds.
It's called,
Straight up intentional theft by Unnammed.exchange. Plain and simple.
.
The day they do the same to you, then you may understand their disdain.
We've all seen this dance many times before with other exchanges and this is no different.