With that much spread and at prices as high and fluctuating as much as they currently are you cannot expect to take 10 DAYS for a transaction of this nature.
Honestly, looking at this from the outside what is the difference between this an actual larceny? A large purchase comes in while the commodity is priced high, the commodity is not purchased but instead funds are held on to while the price drops and then the bitcoins are purchased at the lower price and the company pockets the difference...
Not even saying that foul play truly happened, but instead saying you cant run a business whos actions LOOK indistinguishable from foul play and expect to stay in business...
If you're in a business where you can tell customers i lost 30% of the value of your transaction due to a mistake on our end its eventually going to turn into a scam, even if that wasn't the initial intention... its just too much temptation