Health Care Insurance For Parents + Dependents

Hi Team,

I request you to guide on the best health insurance policy that I can pursue for my following dependents:

1. Aunt
2. 62 years old
3. Current Health status:
4. Diabetic;
5. Angioplasty done in Feb 2020
6. No other Health Issues
7. She currently holds Care Heart Health Insurance Policy
8. Sum Assured is INR 5,00,000
9. Policy Expiry Date is 31-Mar-23 
10. Question: Care Health policy renewal for Sum Assured of INR 5,00,000 will again cost INR 37,849. No NCB benefit passed on inspite of zero claim made in the current policy year. Is there any other comprehensive policy that I can pursue which covers my aunt?
11. Seeking Sum Assured of INR 5,00,000 + NCB + OPD claims + Free Healthcare Check up + Porting of existing policy waiting period covered.
12. Mother
13. 71 years old
14. Current Health Status:
15. Non Diabetic
16. Ex-Breast Cancer patient (In 2012)
17. No other Health Issues
18. She was covered in an old Expired policy by United India
19. Sum Assured was INR 1,50,000 
20. Policy Expiry Date was 30-Oct-20
21. Question: Seeking Sum Assured of INR 5,00,000 + NCB + OPD claims + Free Healthcare Check up.
22. Father
23. 70 years old
24. Current Health Status:
25. Borderline Diabetic
26. No other Health Issues
27. He was covered in an old Expired policy by United India
28. Sum Assured was INR 1,50,000 
29. Policy Expiry Date was 30-Oct-20
30. Question: Seeking Sum Assured of INR 5,00,000 + NCB + OPD claims + Free Healthcare Check up.

Please help me at the earliest.

Regards,

Kapil KR