A GDPR request could accomplish that easily. They will obviously need to keep some amount of information so you just can’t make a new account.
How long ago did you contact them? If they haven’t done what you asked within 30 days*, you should report it to your country’s data protection agency. I also recommend that you inform EA that you are willing to do that, if they are not cooperating.
*In some cases they can extend the deadline a bit, but in general it’s 30 days.