Account linking issue

Hello, I am trying to link my EA Play account to my Steam and Xbox accounts. However, whenever I attempt this, I receive the following warning:

“Your accounts cannot be linked because the Steam account ‘Çağrıbucks’ is already linked to the EA Account [edit: email address removed]. Only one Steam account can be linked to an EA Account during its lifetime.”

Both my Steam, Xbox and Sony accounts have been opened for many years using my own personal email address. None of these accounts have ever been hacked.

I have never owned or used an email address like [edit: email address removed] at any time in my life, and it does not belong to me.