I'm pretty sure karma is able to fix a lot of things :-)
Thanks for stopping by and sharing your own story. After reading all the comments and talking to people in the chat rooms I learned that these type of mistakes happen to almost everybody. Sometimes the loss is small and sometimes it's a bit bigger. However, they've got all one positive efect: they wake us up and help us to stop being lazy when doing such operations. We need to pay 100% attention when moving money from one account to another.
I'm happy you were lucky and got your money back though! :-)