Airtel — sim card stopped working all of a sudden

Address:

AE-217, RABINDRAPALLY,, KRISHNAPUR, Kolkata, West Bengal, 700101

My mother was using a airtel sim[kolkata circle] since past couple of years. 6 months back i have taken new sim card 4 g supported from airtel store. All of a sudden the sim stopped working. Now airtel customer care asking to visit their store again to replace the sim. Since i stay at bangalore, now my mother has to visit store which is not possible since she is not well. I want sim replacement service at home. Because every 6 month it is not possible to go to their store which is far from my home.

Contact no: [protected]