GoAir — I am complaining about my things stolen from my check in bag.

We have travelled from srinagar to mumbai on 16 july at 7.30 am go air flight. We have checkin all our laugauge which include three bags i. E one big travell bag and two back pack.
Our flight was connecting flight from delhi. So we got our laugauge directly at mumbai airport. Once we reached home after checking we found that my new watch timex watch and one nokia cellphone which we have kept in our backpack is missing.
This is such a very bad experience we had ever faced in our. Request you to kindly look into this matter and try to get our stolen things back.