Jet Airways — diamond and gold jewellery and cash missing from luggage

Me and my husband was traveling from singapore to new delhi on 12th march, flight number - 9w-17
When we reached delhi, we got to know our luggage is still in singapore as due to technical issue piolet has to keep surplus fuel and 80 bags were not loaded in flight. Firstly jet airways behaved unprofessional by keeping our luggage with any intimation and huge inconvenience. After so much of delay our bag reached to us on 17th march, though they promised us to deliver within 24 hrs but airline delivered the bag in 5 days. When we checked the bag, gold and diamond jewellery worth 1 lakh was missing and cash (Inr) 5000/- was missing. This is totally ridiculous and criminal offense. We need immediate support and enquiry on this.

Thanks!