Blizzard had acknowledged an issue with localization of EU players, meaning they would get re-routed to the wrong servers.
This issue has arisen since the ME servers have launched, even i myself get sometimes the MES servers or CDG servers whilst the closest are actually the AMS servers.
Wrong link, ignore that one though read if interested.
The re-routing issue can also be solved with the steps provided in this thread:
Hold in mind that this is not an official guide so it’s not directly endorsed by Blizzard to use this. Though this guide can be of used it’s not guaranteed that this will fix the re-routing issue.