9. Where an order for discovery, inspection or production of documents is not complied with—
(a)if the party failing to comply is a plaintiff, the judge may order the action to be dismissed for want of prosecution or stayed until the order is complied with;
(b)if the party failing to comply is a defendant, the judge may order that he be debarred from defending the action altogether or allowed to defend only on such terms as the judge thinks fit;
and the judge may make such order as to costs, including the costs of the proceedings, as he considers just.