The plaintiff instituted action against the defendant based on an initial agreement and a subsequent retainer agreement in terms of which the defendant would request goods and services from the plaintiff. The plaintiff alleged breaches of these agreements, mainly non-payment or underpayment, and claimed an amount of R196 487.00, together with alternative claims for damages and cancellation. The defendant filed a plea denying liability, alleging the plaintiff’s non-performance, and initially counterclaimed for overpayment. The counterclaim was later withdrawn. The plaintiff requested trial particulars under Rule 21. After persistent non-compliance by the defendant, the plaintiff obtained an order compelling delivery of trial particulars within 10 days. The defendant failed to comply with that order, prompting the present application to strike out the defendant’s plea.