V Please see Leilleath’s solution below this post V
Summary
You’ll want to submit a ticket through the battle.net website;
https://us.battle.net/support/en/help/product/wow/166/1153/solution
If that link works, click the “Contact Us” button and provide details - if not, let me know.
The refund may not happen instantly, and IIRC ticket times right now are around 2 days.