ID or SSS card. I also suggest bringing in any documents that you have received from them and anything else that can help you when you speak to them. They're not trustworthy whatsoever and quite incompetent in many areas. Make sure you know the name of the person you are talking with as well. It's ridiculous I know but it's needed. They're not there to help you at all from my own experience it seems there out to make your life problematic actually.
Your Social Security and ID
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