It sounds like you've gone through the correct measures for finding out the status of your State Return. If there is an offset, you should receive a notice by mail concerning the issue. For more information and a South Carolina offset contact number please see link below.
https://dew.sc.gov/docs/default-source/default-document-library/u-s-department-of-treasury-offset-pr...
You can check your refund status by calling the SCDOR at 803-898-5300 or 1-844-898-8542 or checking on
MyDORWAY
. Amended returns and back year filings may take additional time to process.
Please note that any errors found while processing your return may result in additional delays.
https://dor.sc.gov/tax-index/individual-income/Pages/FAQ.aspx
