OCA Testing and Certification South Africa (Pty) Ltd (OCA Testing) entered into three separate written agreements in June 2017 to render advisory, technical and mechanical non-destructive test services to KCEC Engineering and Construction (Pty) Ltd (KCEC Engineering). Initially the relationship operated smoothly with invoices being paid. A dispute arose when KCEC Engineering refused to settle tax invoices totalling R2,603,729.44 comprising R142,002.46 from the first agreement, R2,355,768.05 from the second agreement, and R276,744.00 from the third agreement. The parties agreed to submit the dispute to arbitration before a retired judge, Justice N P Willis. KCEC Engineering admitted the services were rendered but disputed liability on grounds including late delivery, alleged overpayment of R1,961,770.24, and liquidated damages of R1,646,220.00. The arbitrator dismissed both OCA Testing's claim in its entirety and KCEC Engineering's counter-claim. The arbitrator found that OCA Testing was in breach of the first agreement by failing to deliver a Certificate of Conformity (CoC) timeously, and rejected KCEC Engineering's defences to the second and third agreements. However, the arbitrator failed to make a separate determination regarding the amounts claimed under the second and third agreements despite finding KCEC Engineering's defences to those agreements unsustainable.