Thai Airways — My i-phone missing from checked in baggage during travelling from hcmc - bangkok - delhi

Address:	New Delhi, Delhi, 110019
Website:	Thaiairways

I was travelling from ho chi minh city to delhi via bangkok via flight no, tg 557 of thai airway on 7th june (Seat no. 46 a). Due to some technical error flight was delayed by 45 min. So some how passengers were transferred at bangkok to connecting flight tg 331 for delhi. But checked in baggages could not be transferred to the connecting flight tg -331. When i reached delhi on 8th morning i came to know this. Well at the airport i filled a form to claim my baggages and they informed me that baggages will be delivered to my residence at banswara. So on 8th morning i by indigo flight i reached udaipur and from udaipur i reached my home at banswara. On 10th june thai airways person handed our my baggages at banswara bus stand. Since my suitcase was locked so i brought it home but when i opened it my new purchased apple i-phone 6 s was missing. There were long exchanges of mail with thai airways in this matter but finally they refused to compensate the loss. Please helpme in this matter