A paid transfer mistake.

Hello. I just had probably one of the worst mental lapses I've had in a while, and it involved a faction change for my death knight, Gelunex. On the website, instead of faction changing, I race changed. I entered in my debit card and I tried to cancel the payment, but it said it could not be reversed. I know I messed up, but I wanted a faction change instead of a race change. Thanks for any help! The price is $5 more, but I'm willing to pay for it of course. I wanted the race change all along.

Akimboslice