Nice try on changing the subject.
You really think they would say "at Bitstamp's exchange rate at the moment of the refund taking place." and refund from elsewhere?
Oh, I don't know... Perhaps it's proceeds from their "5%" farm, or maybe it's from the pile of BTC that they received for Neptune orders. Maybe bitpay ties their rate to bitstamp, so any refund processed through them would be tied to bitstamp's rate.
Really tough concepts, I know. That whole part where they referenced Bitstamp's rate and didn't include any sort of statement about delays due to Bitstamp withdrawal issues. On another note, how out-of-touch with the world are you that you think the guy responding to the e-mail has any sort of access to KnC's wallets? There's likely a whole admin/accounting process that needs to be taken before the funds can be released. One that might take, oh I don't know, 1 to 3 days.
This is like explaining isotropic vector matrix equilibrium to a monkey. Useless.
Keep spinnin' those wheels bud; you should probably drop some more acid.