Paid For Race Change Instead Of Faction Chnge

Good afternoon. I'm afraid I've made a terrible mistake and I'm reaching out to see if it can be corrected.

Today I decided to bring my DK back from Dunemaul to Kil'jaeden. Initially I was a Human DK but decided to see what the Horde side had to offer. I really didn't get much done over there and wanted to come back. I paid for the Server Transfer and now Heidfeld (my DK) is back on Kil'jaeden.

Here is where I made the mistake. In my excitement I accidentally made a Race Change instead of a Faction Change. Is there anyway that this can be reversed so I can use the money to make a Faction Change instead?? I assure you this was a mental mistake and any help on this matter woul be greatly appreciated!!