The way that operation was working when I made my orders, I wouldn't be surprised if Hashfast lost payments and doesn't even know who all its customers are.  When I paid for my upgrade card with a bank wire, it took a few e-mails to them, days after the wire arrived, to get them to acknowledge receipt.  They had to be sent the wire details a couple of times before they admitted receiving payment.

It seemed to me at the time, and even more in retrospect, that they had money flowing into their accounts that they didn't even bother to identify the source of.

Then again, I definitely don't put it past them to deliberately lose creditors it knows of as well.