Indigo Airlines — Baggage opened

Dear customer care manager
I travelled indigo 6E282 on 22.03.15 from chennai to delhi at 2020 from chennai
My luggage was locked and tied with the plastic wire lock by your staff at chennai
But when I reached home, saw the bag was opened and there was no plastic lock which was done by your staff.
My important keychain a were missing, my pen drive with loads of pictures, chip of my computer which had the whole lot of pictures taken on tour were all missing.

I was shocked n surprised that it can happen in Indigo a reputed airlines in India.

Looking forward to register it very seriously because what I lost is very very precious as it can not be recovered with any other source.
Kindly help me to find my belongings ASAP.

Hope will get a call back [protected] suman