Steam account hacked, it is now linked to a random email I have no access to.

My Steam account was hacked, but I have secured it. The hacker linked their own EA account to my Steam. I cannot access the email or unlink it because EA requires verification. I need help removing this unauthorized link so I can use my own EA account for Apex Legends. Please escalate this to a support advisor who can verify my Steam ownership. When i try logging in using steam in EA I need verification that I don't have.