Siltek Holdings (Pty) Ltd sold and delivered goods to Business Connexion Solutions (Pty) Ltd between August and October 2001 for R436 430.97, payable within 30 days of delivery. Before the 30‑day payment period expired, Siltek was placed in liquidation on 16 October 2001. Separately, Siltek owed Business Connexion commission of R594 032.34 for introducing Telkom as a customer; this commission debt became due and payable before liquidation. Business Connexion did not claim payment or set‑off prior to liquidation, but raised set‑off as a defence only when sued by Siltek’s liquidator for the purchase price.