Muller v Botswana Development Corporation Limited

The respondent, Botswana Development Corporation Limited, lent P1 500 000 to Trans Africa Plastics (Pty) Ltd under a loan agreement concluded in Botswana. The three appellants, all directors of the principal debtor, each bound themselves as sureties and co‑principal debtors for the principal debtor’s obligations. When the principal debtor defaulted, the respondent sued the appellants in South Africa on the deeds of suretyship. The appellants entered an appearance to defend, whereupon the respondent applied for summary judgment. The appellants opposed summary judgment on the basis that the principal debtor intended to institute an unliquidated counterclaim for damages against the respondent in pending proceedings in the High Court of Botswana, allegedly exceeding the respondent’s claim and capable of extinguishing it by set‑off.

The appeal was dismissed with costs, and the summary judgment granted by the court a quo in favour of the respondent was upheld.

The case clarifies the limits of a surety’s ability to rely on an alleged counterclaim by the principal debtor in resisting summary judgment. It affirms the strict requirements of Uniform Rule 32(3)(b) and underscores that vague or unsubstantiated allegations of an unliquidated counterclaim will not suffice to stave off summary judgment. The judgment also discusses, though without finally deciding, the controversial question of the application of Uniform Rule 22(4) to sureties.