Dad passed away

I’m 22 years old, and my father lives in Coimbatore. My mother passed away in 2016 when I was 14 years old. She was from Malaysia, and my father is from Coimbatore, India. My mother was my father’s second wife, and he has a first wife and a son who currently lives in the UK. For the past week, I’ve been trying to contact my father via WhatsApp, but he hasn’t responded, which seemed unusual to me. Since I don’t have any contact with his family in India, I was eventually able to find a manager’s number online. The manager informed me that my father had passed away. Neither my father's first wife nor her son contacted me about it. When I asked the manager for her number, I was told she didn’t want to speak to me. I’m now trying to figure out if my father left any will for me. Can you advise me on how I can go about finding out?