If you've exhausted 'standard channels' regarding a Social Security problem, you may want to contact your Congressperson. They can't force an expedited process, and they can't overturn an agency's decision. But they may help when an agency isn't responsive, or they can help you find possible appeal options.
Generally, you'll need to give written authorization to the Congressional staff before they can help you.
Here is contact information regarding the Congressperson who serves zip code 10455 :
Hon. José Serrano