Recovering old Account

Hello! I have one very unusual problem. I've started years ago on Warmane,I've played here when the server was called Molten and basically I have rich history with the server. I've donated to become premium, played on Wotlk realm then we transfered the chars to Cata, then MoP came out, then moved there and etc. The problem is..my email acc got hacked, during one of my WoW breaks, therefore I lost my fb,insta,twitch and more things including my old Warmane acc. So recently I've made a new acc here and I was thinking is there any chance you guys can help me restore my old one( if that's even possible) I remember the name of the old Warmane acc, I'm trying every possible password that I ever had since I've ever touched a pc :D and nothing...The interesting thing is that 2 of my friends( who doesnt play anymore) downloaded the Wotlk and MoP clients just to check up their accounts(1 of them is not premium) and everything is ok, they have their toons, just had to re-enter their char names. Can you please give me an advice or any suggestions? Is there any chance to restore my old account? Oh another thing I'm checking up the armory and there is character name on the same MoP realm as my old main char undead DK named Rar...is that mean that my old char is deleted?.Thank you!