(12) If from any cause a sale cannot or does not take place, or is incomplete, on the day appointed for the sale, it may be postponed or continued until it is effected or completed. However, in the case of executions in the High Court a further notice stating the time and place of the adjourned sale shall be published once at least in the Gazette and, if the Sheriff deems it necessary, in a local newspaper, if any; and if a sale in the High Court or the district court does not take place before the writ of execution is returnable into Court, the delay for returning the said writ shall be ipso facto extended and it may be returned within 7 days of the sale.