A withholding agent who pays the Secretary more under this Article than the Article requires the agent to pay may obtain a refund of the overpayment by filing a request for a refund with the Secretary. No refund is allowed, however, if the withholding agent withheld the amount of the overpayment from the wages or compensation of the agent’s employees or contractors. A withholding agent must file a request for a refund within the time period set in N.C. Gen. Stat. § 105-241.6 Interest accrues on a refund as provided in N.C. Gen. Stat. § 105-241.21 (1959, c. 1259, s. 1; 1973, c. 476, s. 193; 1975, c. 74, s. 1; 1981 (Reg. Sess., 1982), c. 1223, s. 3; 1989 (Reg. Sess., 1990), c. 945, s. 13; 1997-109, s. 2; 2007-491, s. 18; 2008-187, s. 15.)