Ava Merchandising — herman & hansen watch lock not proper

I had bought a herman & hansen combo watch from chennai airport in august 2018. The lock of the male watch is not proper and so it opened accidentally and the watch fell on ground, the glass is broken now. I had to suffer this loss due to poorly working lock in the watch. The salesgirl at chennai airport had told me that any ava shop at any airports provide services, does ahmedabad airport has ava shop where i can replace the watch or the glass and the locking system? Or where is the service center in ahmedabad where i can go to replace it? Thanks.