The CIS Ombudsman has issued a two page instruction guide on how to prepare for a call to the NCSC and what you may expect to obtain for a response. The NCSC telephone number to inquire about a case is 1.800.375.5283. The number to call is the same if you are in Florida, North Carolina, Ohio or anywhere.
According to the Ombudsman's guidance the NCSC operates on two-tiers.
Tier 1 is Customer Service Representatives who can only
relay basic information through scripts;
answer questions about forms, and;
transfer calls to Tier 2 representatives in unspecified certain circumstances.
A Tier 1 representative cannot answer specific questions except give you the same information that is on line (often this information is out of date or incorrect); cannot transfer your call to a local CIS office or to a Service center where your case may be pending; and cannot give you any legal advice.