Jet Airways — ticket cancellation penalty

I had to cancel a air ticket pnr trxtju. Cost of purchase was rs 7567 out of which base fare and airline fuel charge component was rs 6120. Even though cancellation has been asked 17 days before date of travel, refund offered is only rs 588. The penalty is far more then laid down government policy which says max penalty can be only base fare and airline fuel charge. So in any case rs 1447 should be refunded.