The appellant bank (originally NBS Bank Ltd) entered into a loan agreement on 19 June 1991 with the first respondent to finance a timber farming operation. The agreement commenced on 1 March 1991 and provided for repayment on 28 February 2007 ('the Repayment Date'). Clause 6.3 gave the bank a right to review the arrangement on 29 February 1999 ('the Review Date') and require repayment of the entire indebtedness by giving written notice before 1 September 1998. In August 1998, the bank exercised this review power and demanded payment of R6,201,739.74 (capital of R3,100,869.87 plus interest capped at the same amount under the in duplum rule) by the Review Date. The first defendant and sureties (second to fifth defendants) defended the claim, arguing that while the notice stopped further advances, the agreement continued and repayment was only due on the original Repayment Date in 2007. The magistrate's court dismissed the bank's claim, as did the Natal Provincial Division on appeal. The bank appealed to the Supreme Court of Appeal.