HDFC Ergo General Insurance — Cancelation of my policy

Hi Sir/Madam,
Myself pavithra. I am having a health insurance policy in HDFC ERGO and I suppose to renewal it last month. But I told many times to cancel this policy. Still I am receiving payment reminder message again and again for my mail as well as by SMS. I am getting heritated day by day by receiving this message. Please stop receiving this msg again and again. Below is the link which I am getting again and again to make payment
https://smarthub.hdfcbank.com/SmartHub/#/payment

THANK YOU,
REGARDS,
PAVITHRA C