There are no game masters on the forums, you’re going to need to initiate this service yourself.
https://us.battle.net/support/en/help/product/wow/166/1151
Choose the second option, but after that, hopefully someone else will chime in with what to do after that, as I have nothing I need to refund and test further.
A little shocked that there’s a self-service option for it now, but Blizzard support has come massive leaps and bounds over what it started as.