Basically WG EU screwed up somewhat and forgot to activate a discount. Now they return the 50 percent back.
During the day of 25-06-2016, 05:10 until 25-06-2016, 17:00 (UTC times) you made purchases of consumables. As you may be aware, we had planned to have a 50% discount for your consumable purchases on that day. Due to an error on our side you were not able to benefit from the mentioned discount on your purchased consumable’s. We were able to identify the affected accounts including yours and are now happy to refund you 50% of your purchased consumables during that period both in gold and credits.
This refund should be apparent on your account as you read these lines. We are sorry for any inconvenience this may have caused and please rest assured that we will do our best to avoid similar issues in the future.
Thank you for your understanding.
Your customer service team.