Can't Unlink Ea Account, steam account is connected to a stranger account.

I want to play apex legends in my main steam account, when i try to register it automatically made me asked for a code for the gmail of a stranger/hacked account, below is the screenshot:

This appears when i tried to login into the ea account using my steam account. I searched online for the gmail and found a post talking about the same thing but on Titanfall 2 with the same @ theirwarrenmail com email. I want to unlink my main steam account from the ea account, but the ea support ai chat kept telling me to asked for customer support, but when i press the 'contact us' it lead me back to the ai chat. So i hope this post can attract a real cs to help. My main steam account is TrollMen07, i used to be able to play Apex on it but when i tried a few months ago the problem arrived.