Cox & Kings India — refund not initiated

Address:

Mumbai City, Maharashtra, 400093

I booked a flight & hotel accommodation with mr. Mithun & mr. Shailesh of cox & kings (Ahmadabad & mumbai respectively) my visit to germany.
On 24th september, 2019 i paid them 1, 92, 150 & they cancelled our hotel & flight without informing us.
They claim they are not liable to inform us prior to cancellation & since then have refused to reply to our numerous emails, calls & messages.

This is unethical and manipulation of the law. How do we claim our money back?