(b)if the opposite party, on receipt of a copy of the complaint, referred to him under clause (a) denies or disputes the allegations contained in the complaint, or omits or fails to take any action to represent his case within the time given by the District Commission, it shall proceed to settle the consumer dispute-(i)on the basis of evidence brought to its notice by the complainant and the opposite party, if the opposite party denies or disputes the allegations contained in the complaint, or(ii)ex parte on the basis of evidence brought to its notice by the complainant, where the opposite party omits or fails to take any action to represent his case within the time given by the Commission;