S.C. Code Ann. § 32-3-20

No action shall be brought whereby to charge any person upon or by reason of any representation or assurance made or given concerning or relating to the character, conduct, credit, ability, trade or dealings of any person to the intent or purpose that such other person may obtain credit, money or goods thereon unless such representation or assurance be made in writing, signed by the party to be charged therewith or by some person thereunto by him legally authorized.