Instead of giving them  a phone call (what, 20 min at the very, very most?) or reversing the ACH (including time to drive to the bank and back, maybe an hour?) this guys has been going on for days and days to try more and more convoluted ways of getting his money back.

Something smells fishy here.  Perhaps he didn't call them or give verification info because he can't?  Maybe he registered the account with a false identity or maybe the verification was triggered not as a random spot check, but as a "for cause" investigation?