Hey man, relax! Your order was already processed. Im not sure who told you 3 days but its not true, dont worry.
Contact me in the future if you have an issue, no reason to flip out!
Charlie
BTC was trading at 14.60 at MtGox (and 14.20 at BTC-e) when I tried to transfer. It is now 15.60/15.20. That means I have to pay 6.8% more because I was stupid enough to believe a service called Bitinstant would you know be instant. So I will "flip out" if I want to. I didn't pay 1.5% for you to sit on my funds for 18 hours!
If you can't fill the order, don't take it without warning the user. How freaking complicated can that possibly be?
$available = get_reserve ($to_exchange)
if ($available < $requested) {
warn_low_reserve()
}