The SSS Customer Service Center offers assistance in English as well as Spanish.
Call 800-344-8328. If you are calling from outside of the United States or Canada, dial 952-967-9922.
Hours of operation are Monday-Friday: 9:00 am - 8:00 pm EST.
Or you can email support at firstname.lastname@example.org.
The mailing address for submitting paper PFS and for submitting required documents is:
SSS By NAIS
P.O. Box 449
Randolph, MA 02368
For overnight mail, use this address: SSS by NAIS, Application Processing Center, 437 Turnpike Street, Canton, MA 02021.