Airtel — I am complaining about lost of sim card

Address:

saraswati society, vikhorli parksite, Mumbai-400079

Respected dear sir/madam

i am samad raqib shaikh son of mohammad raqib shaikh, my father passed away 1.5 years ago his sim card lost sim no - [protected] but
his sim card is important for me, because all OTP and many works so what can i do next no idea sir please help me as soon as possible and maybe i vist on Airtal gallrey if any information gaves to me please mail me this id [protected]@outlook.com

thank you
regards samad raqib shaikh