dated 13 October 2006 the Respondent had clearly stated that refund is not hit by unjust enrichment as the service tax was paid out of the commission received by them. Consequent to refund application dated 13th October, 2006, the revenue issued show cause notice dated 5th December, 2006. The show cause notice is not annexed to the appeal memo filed by the Revenue. However on reading the order in original it appears that no ground to reject the refund application on ground of unjust enrichment seems to have been raised by the Revenue. Therefore, from the facts available on record, it was never the case of the Revenue that there was unjust enrichment on the part of the Respondent – Assessee. It seems to have accepted the assessee's stand that there is no unjust enrichment was made in the refund application. As at no point of time before the first Authority or Appellate Authorities was the issue of unjust enrichment raised by the Appellant either in the submissions and / or by filing the cross appeals / cross objections to the Appellate Authorities.