Airtel sim is barred after recharge 3599 one year pack

I am 75 years old and suddenly my Sim has been blocked and not able to make any calls or use the internet. The sim was delivered in my house after submitting all the details and kyc.
The mobile number associated with the SIM is 77#####54
I have been using this number for the past 2years, and it is linked to several important services including banking, UPI, and work-related communications. The barring of this SIM has caused significant inconvenience.
I kindly request you to look into the reason for the barring and guide me through the necessary steps to get it reactivated. If any documents or formalities are needed from my end, I am ready to provide them at the earliest. If not please refund the amount I have used to recharge and I will change to jio service or bsnl

Hello @Saanitagnanamutghal

Before proceeding further, we recommend that you first send an email to the customer care department of the Airtel, clearly outlining your concerns and requesting to un-block the sim card. This step not only gives Airtel a chance to address the issue but also helps strengthen your case if you decide to file a complaint with the Consumer Forum later.

Please wait for a reasonable time for their response. If they do not respond or fail to resolve the matter satisfactorily, feel free to reach out to us again. When you do, kindly include a copy of your email to them and any response (if received), so we can guide you on the next steps.

Best regards,
Thanks

Yes sent the email but no response

We have carefully reviewed all the details and documents you have submitted regarding your complaint. Based on our thorough evaluation, we regret to inform you that the only viable option left is to file a case before the nearest District Consumer Disputes Redressal Forum.
You can file the case through the online e-Jagriti portal: e-jagriti Platform: Ministry of Consumer Affairs, Food, and Public Distribution, Government of India

Thanks