Gemstore scammed me
Only thing you can do is contact Support at https://help.guildwars2.com/anonymous_requests/new and discuss it with them.
ArenaNet Communications Manager
I feel sure we can help. Please submit a ticket by clicking “Support” at the top of this page and then clicking the “Submit a request” option. Provide as much information as possible in the web form, because that will create a ticket within the support system. You are not required to provide all the information but may leave fields blank when you cannot accurately complete them.
Gaile Gray
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet