Deciding when to claim SS retirement benefits is a critical financial decision that takes a lot of thought, analysis, and planning. And you cannot depend on SSA employees (or their website) to guide you through the process to make an optimal decision. There is an explosion of attention to this topic in the financial planning research and advising literature. One reliable source that is reasonably easy to understand is: Social Security Spousal Benefits Simplified: http://wealthmanagement.com/retirement-planning/social-security-spousal-benefits-simplified-0
Also see the related articles at the bottom of the website.