Guild Wars 2 - Refund Confirmation
We will begin refunding accounts on July 12, 2015, and approximately once per week after that until the first week of August. Once your refund is processed, it may take up to five days to appear on your statement.
https://help.guildwars2.com/entries/94582027-Heart-of-Thorns-Pre-Purchase-FAQ/#Additional
Thanks, tbh didnt read the additional info in faq.