RVYBDU Unfortunately, hacked accounts cannot be handled on the forums as you would need to contact EA Support here: What to do if your EA Account has been hacked. I also recommend securing your Steam Account as well, (even if you had linked it to your EA Account yourself).
You should be able to secure your Steam Account if you're having issues signing in here: Steam Support :: Recovering a Stolen or Hijacked Steam Account, (otherwise you can just change your Steam password if you can sign into your Steam Account), and you should also enable 2-step verification on both your Steam Account and your EA Account.