if you call the 1-800#, use option 1-2-5 something like for change of address or typo in an approved case, punch in your LIN #, and you will get connected to an IO at NSC.
i was pleased when successful in doing this...when you punch your case #, the phone system recognises that your case belongs to NSC and if their lines are free, you will be directed to NSC and not the customer service call center.
good luck.
