The plaintiff, a pharmaceutical supplier, was successfully listed on the defendant's supplier list after responding to an advertisement. The plaintiff supplied pharmaceuticals to the defendant's hospital and invoiced the defendant with banking details. Upon reconciliation, the plaintiff discovered the defendant owed $15,665.14. The defendant claimed it had paid in full but investigation revealed payments were made into bank accounts different from those officially supplied by the plaintiff. The defendant alleged that one N. Moyo, purportedly acting on behalf of the plaintiff, had instructed payments be made into these different accounts. The plaintiff's managing director testified that N. Moyo was not employed by the plaintiff, was not a director or shareholder, and that the plaintiff used Swift for deliveries and Patrick Zowa (who worked at the defendant's hospital) for initial communications. The defendant's witnesses confirmed N. Moyo was their contact person but conceded with hindsight that they failed to conduct due diligence to verify N. Moyo's authority to bind the plaintiff.