Hey @xQueenyBee,
Sorry to hear you no longer have access to your old account!
You're right that this will need to be handled through our support team, as we aren't able to discuss your account details or make any changes here on the forums since these are public boards.
I'd definitely suggest checking through as many of these security steps as you're able, then you'll want to contact support directly.
If you create a new case here and select Game Support > The EA app > I need help with my hacked account, you should be able to get in touch with the support team so they can assist further.