Jetairways — Loss of baggage

dear sir, my son anish ashok was a passenger of jet airways 9w404 from kochi to mumbai on 22 aug 2015 and further traveled on same day and same airline no.9w564 from mumbai to damam.on arrival at dammam he got to know that his baggage ( one travell bag and one suit case tag no of the baggage given by cial i was 9w696232 and 9w696233 ) is not in plane immediately he booked a complaint at damam air port vide complaint no dmm 9w 11960 after this, my son and me several times called to complaint cell and they told that every time" your baggage is not yet traced call after some time later " now 4 days elapsed till no any satisfied answer got from jet air ways auth or not get his baggage.the baggage contained his whole personal clothings and belongings and food items like achar chips and the "onam" shopping materials given by his friend!s home for handing over to his damam frieds. it is therefore requested that higher authorities to jump in and resolve the issue as soon as possible as my son is facing very difficulties for want of his personal belonging my son e id is [protected]@nastrust.com tele no.[protected].my e id is [protected]@gmail.com mob [protected]