Care Health Insurance — Claim rejection even after submitting emergency documents

Claim number[protected]
I have taken policy for my dad from care health insurrance. Past 7 seven years I am using this policy. Only one time I have claimed insurance for cataract treatment. But recently My father needed to be hospitalized due to emergency. I have asked for reimbursement from company but they are rejecting claim saying no emergency case. Even after proving emergency letter they are not considering claim and just sending only one reply "claim rejected". I am now feeling how can this people cheat people even for small amount who are paying for health insurance more than 20k sincerely for so many years and they are rejecting claims without checking claims documents, without taking any opinion from medical team. As it is clearly mentioned in admission procedure condition of patient during admission.