It is not possible to cancel a refund in progress
Refund policy for Heroes of the Storm in-game purchases.
Checking on the status of a delayed refund.
Money refund policy for purchases of Call of Duty Points.
Friend or family member used payment information without permission and I would like a refund for the purchase(s) made
What to do if a mistake was made with a purchased gift
Customer Support may ask you for your PayPal billing agreement ID or your order invoice ID when assisting you with a refund
How to resolve this error when redeeming a Blizzard Balance code
Purchased Heroes of the Storm Gems for the Wrong Region
How to resolve the error message "We can’t process this code at this time"