Purchasing sims 3 points

Sounds strange. Are you living in the US ?

I would contact customer support and ask them

They can be found here: https://help.ea.com/contact-us/ask

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