Unlink Wrong EA Account from My Steam

I recently lost access to my Steam account due to unauthorized access. I was able to recover it within 2 hours. However, during that time, someone seems to have linked a different EA account to my Steam account without my permission.

Now, I am trying to link my own EA account to Steam, but it says that another account is already linked.

please help me unlink the incorrect EA account and allow me to connect my own EA account instead?