They apparently think you filed as a resident alien, not as a dual-status alien.
The South Carolina Tax Code is available on the internet. See Code Section 12-6-3400, Commission Decision I-D-288, and Opinion No. To request relief, a taxpayer should send a letter to the Department providing the taxpayer's name, address, phone number, tax years involved, and complete statement of the facts. It is a lot of work for me to go through this pain.
Marital status on this date determines your marital status for the whole year. My ex-spouse is delinquent in paying child support. You have a choice of filing a traditional paper tax return or a paperless tax return by using an electronic filing method. If you have not received your W-2 by early February, you should contact your employer.
South Carolina does not tax compensation received for the customary annual training period up to 15 days for guard members or 14 days plus travel time for reserve members, weekend drills, and inactive duty training. Paper filed returns are generally processed within 90 days from the date they were mailed. Estimated tax payments are made by filing Form SC1040ES.
See Code Section 12-6-3330 and the instructions to the individual tax form for detailed instructions. If you misplaced your W-2, contact your employer for a replacement. Right now, it seems I supposed to submit tax return as a NR. This list should not be considered as an exhaustive listing of all exempt securities. Also, see Code Section 12-6-3500 that provides for a credit over the qualifying taxpayer's lifetime for other state income taxes paid on the employee's contributions. See Code Section 12-6-1170 and Internal Revenue Code Section 408.