S.C. Code Ann. § 27-18-70
(A) Any demand, savings, or matured time deposit with a banking or financial organization, including a deposit that is automatically renewable, and any funds paid toward the purchase of a share, a mutual investment certificate, or any other interest in a banking or financial organization is presumed abandoned unless the owner, within five years has:
(5) had another relationship with the banking or financial organization concerning which the owner has: