Spice Jet Airlines — spicejet bag handlers stole items of check-in luggage

I Mukesh Kumawat, travelled on SpiceJet Airlines SG58 from Dubai to Jaipur. The flight arrived in Jaipur on 15th July at 08:35 am. I had checked in with a bag which was locked at the Dubai counter. After landing in Mumbai I got the bag from baggage claim put it in a trolley and came out the airport gate. After that I noticed that my lock was unlocked and someone had used a knife or some sharp object to tear the bag's zip. There was a NEW MOBILE of HUAWEI (MODEL :ATU-L31, IMEI : [protected]) was missing which includes new mobile phone up to about 10000 INR. I told it to SpiceJet counter executive at Airport and they were of no help. The only place this could have happened is when the bags were under SpiceJets responsibility.The spicejet Jaipur staff insists that this has happened in Dubai airport to brush me off.
I'm attaching the photos of my bag which was captured at Airport by me.
I am looking for compensation for my loss.

Please recover my loss otherwise I have to take a legal action against Spicejet.