The court observed that the purpose of Rule 138's sequential procedure is to ensure that interlocutory matters are set down without undue delay, failing which they should give way to the setting down of the main matter. The court also noted that where a legal practitioner, who should know better, forges ahead with a procedurally defective application after a point has been raised, this amounts to a flagrant breach of the rules that puts the opposing party unnecessarily out of pocket, warranting an order for punitive costs.