Copy of 70's, 80's 90's SP bought from shop sealed. Code will not register, saying already used.

FAQ http://answers.ea.com/t5/The-Sims-3/FAQ-Invalid-and-Used-Serial-Codes-amp-Games-not-showing-up-in/m-p/194028#M8203

if in the event you need to contact CS here's how  

They can be found here: https://help.ea.com/contact-us Choose a category, a game and a platform for the contact options to show up. If live chat is gray, change your country to US and make sure you're on US Business hours. It might also gray because they're very busy. Try later. See this post if you have trouble with the site: http://sims3.crinrict.com/en/2012/10/how-to-contact-ea.html