I share your total frustration with whatever bank is involved. Just to be clear, though, there hasn't been official confirmation that the bank who closed Bitfloor's account is Capital One. Capital One's name comes up a lot through user speculation in reddit and bitcointalk, but so do two other banks' names. All that I can tell from user comments is that it seems that different users encountered different banks' names associated with Bitfloor in the course of getting money on and off the exchanges, depending on the transfer methods they used. I don't know why that's the case. Could be that Bitfloor was using Capital One P2P payments for some purposes, but holding its main balance in another bank. (But again — that's pure speculation.)