Jet Airways — baby stroller lost because of improper tagging

Hi, i was travelling from bangalore to hongkong through jet airways date 11-march-18 with my 6 month old baby. I was carrying 1 suitcase and 1 baby's stroller. Flight was transit from banalore to mumbai and then hongkong. For bay baby stroller jet airways staff told me that i can use it in airport and have to submit to crew member while boarding to flight. This works good from bangalore to mumbai but from mumbai to hongkong when i reached, i asked crew member to give baby stroller but he said i can collect outside along with baggage but there was only bag no stroller.
My e-ticket number is: 589-[protected]
Baby e-ticket no: 589-[protected]
Date of journey - 10 march'18 21:55 bangalore to mumbai (9w-449 flight number)
11 march'18 02:05 mumbai to hongkong (9w-76 flight number)