Help unlinking a spam EA account from my Steam account

I purchased Dragon Age II with all DLCs on my steam account, but to access the DLCs it required me to open an EA account, which I did, and then asked me to link it to my steam account. However, when I try to link it, I get a message saying there is already an EA account linked to my steam. 

I have never linked an EA account to my steam account and the email address they partially display in the error message is clearly a spam address (@orgasmail.com) not a real one. I have spent all morning on the help page trying to find a way to actually ask someone for help but the bot just asks the same questions over and over and ignores my answers.

I don't know how a spam email could have linked to my Steam through EA because I have 2FA set up on Steam and have never received notification that someone was trying to link them.  Steam are not able to assist because the linking is all done at the EA end.

Can someone please assist having this spam account removed and unlinked to me?