Help any 1 can help me please

I was having an acc on cata but some one 2 month ago has send me an site in game like warmane he sayd go log and click get coin to get free coins but he scam me and the site is a scama to hack acc and he change my acc email as u can see in this picture
http://i.imgur.com/ZjloVcr.png
i have an back up of my stolen acc but idk how to use it to recover my acc
please help please

It's your own fault for giving someone your account details.

The "backup" is for Warname to use when THEY have a database issue, not when your account gets stolen.

Your own stupidity and naivety is your own downfall.