Airtel Prepaid — Lost of Phone & Sim Request of Blocking the sim card is it possible

To
The Director
Airtel Ltd
Sub: Request of blocking the sim card with incoming is it possible to give details through email.

Respected sir
This is to inform that i lost my phone along with sim as i want to block the sim card with incoming along with proofs if there is chance to write a complaint through mail i will give the details of mob no and sim no send the details to my mentioned mail id sir.