Sims 3 base game download issue

did you download and install origin? if not downlaod origin use the same email and password as you have on the sims account to log in to origin see if your game show up in the my games tab then download https://www.origin.com/ie/activate/create

if 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