@jellyclock I've moved your post from the Battlefield 3 forum to the FIFA forum so you have a better chance of receiving an answer. From your post the first thing you should do is change your password and opt into 2 Factor Authentication. If you no longer have access to your account you'll need to speak with a Game Advisor to sort the issue here: https://help.ea.com/contact-us

Remember never disclose your account information to anyone.