Franch Express Courier — Complaint regarding item delivery

Hello,
Introducing myself rejin c r, from thrissur kerala. This letter is regarding a courier i send to kollam, kerala.

Consignment number (Awb#) [protected]. And it is a live fish.

I send this on 24th august 2020. Today this is 26th august. The item not yet received to the concerned person.

While calling to the kollam st courier office, they are responding very badly. They are being rude to me. They are saying they have no responsibility on this.

I would like to know what is the guarantee to our product? Is this the way those people have to respond?
Hope i will get a proper response asap.

My email is:- [protected]@gmail.com