Why are you not filling out the forms? If you get the check, I think they want you or someone who you live with/lives with you to work with you filling out the form or you aren't well enough to take care of yourself/receive and manage the check. The details of your life need to be asked/known by the person filling out the forms, not just anyone you tell whatever to; the person has to verify they are "true". The SSI is for specific things, to supplement your living expenses, and if you are getting money for rent, for example, only someone who knows/sees you everyday is likely to know those details, personally, and be willing to answer that, yes, you live at X place and pay Y rent, etc.