So, I faction changed my mage undead acidentaly, then I called blizzard on skype and asked them if it can be reverted, i just said about my problem and the connection broke up.
I then check my Battlenet page and by suprise I found there's a ticket "answer" We are sorry we cant rever it but here's cookies for you
Free faction change + 25 euro refund
now I got my money back and the character (now night elf female) flagged for change.
What happens if I keep it that way? will they bother check me in the future and take their money back?
The ticket is marked as answered, I got the email confirming the money transfer, all transactions are complete.