After the first month of WoW, I wanted to pay by Telekom or ELV. But since I had read in the WoW forum often, that there may partially come to chargebacks, accounting errors, etc. and then the account will be blocked immediately, I chose the path on the Game Card and go well. Never had problems map on Amazon ordered, within a few days in his hand had entered number in the Account Management, done!
If I had problems with the Game Card, I could turn to the fantastic and professional service from Amazon, with whom I had previously always fully satisfied.
The people who use the ELV at Blizzard and get into trouble, there have as severe a lot of the service to contact Blizz.