This seems to be ongoing over the past week which is why I’m posting here.
From WG EU support.
In case your account has been charged accidentally more than once for the same package, we invite you to contact our customer support team to request a refund.
Refunds are only eligible to packages that were not used yet. Please make sure to name the purchased package and the number of times your account has been charged.
We are sorry for the inconvenience this might have caused.
Your Wargaming.net Support Team