Account hacking problem

Recently my account was hacked and when I finally got it back I found it banned I talked to blizzard and they very kindly fixed it for me, the problem is that my main character is still blocked and they tell me that they can’t do anything within the game so I would like to know if there would be a solution since they have sent me here to ask

Someone hack my accont change everything ( login things) cant recover it but i struggling to show blizzard that im the owner of the accont, even with paymen proff they tell me im not the owner. I have no ideea what to doo