Star Health And Allied Insurance — scamming money from senior citizens

I bought senior citizen red carpet policy for my dad. Now my dad is in hospital, i registered for a cashless process from the hospital. Instead of approving the process, they sent their agent to talk to my dad soon after his operation and took signatures from him without understanding his condition. Now they deny the claim by saying the patient had on and off chest pain for past 6 months,

I don't understand how the came to an assumption that he had on and off chest pain and how that is related to deny the policy.

Scamming senior citizen money is a shame