Section 21 of the Consumer Protection Act confers jurisdiction on the National Commission to set aside an order of a State Commission if it has failed to exercise jurisdiction vested in it by law. Proviso to section 15 of the Act nowhere says that an application for condonation of delay is mandatory. If there is sufficient material before the State Commission that there was sufficient cause for the appellant for not filing the appeal within prescribed period, it may entertain the appeal. Otherwise also, now a days the Superior Courts are laying stress on deciding the lis on merits instead of technical grounds. So, if the matter is good on merits, the revision may be allowed.