Jet Airways — Missing baggage reference number cok9w75864

Dear sir,
I travelled to cochin from london on 14/06/2017 at 9.30 am flight number 9w 119. I collected my luggage from mumbai and i checked in but when i reached cochin on 15th june at 8.15 am flight number 9w 436, unfortunately i missed my luggage with contents of expensive new cloths. At the airport i complained and one member of staff reassured me within 24 hours i will get my luggage back. Till today i haven't received my luggage. I would like to claim for compensation.
Thank you,
Kind regards,