Airtel — Reissuing of new sim card

I was using one mobile number from year 2010 with my one of work mate ID Because those times in Maharastra state the refused to give sim card of other state ID Proof then i requested one of my company mate and he helped to me with getting new sim card & it was BSNL number then i ported in Airtel. I am working in aboroad & i was doing recharge every month to be remain activated sim card & same number i used in my bank account, Pan card, AAdhar card.Lic Policy and many more account suddenly one day my sim card stopped working then i contacated some of my family members to check with Airtel care but did not get help from Airtel. Can i get help from you regarding problem.