Airtel — Sim card not working< however billed for 3 months

Address:	560071
Website:	www.airtel.in

Dear Sir/ Ma'am My SIM CARD with AIRTEL registered under [protected] has not been working for the last 3 months, yet instead of replacing the SIM, they continue to send me bill for the last 3 month. I have written and spoke to several customer care officer yet there is not resolving this issue. as im out of station im unable to go to the store directly and replace the SIM, however My father has a signed letter of authorization, as well as all documents to prove its legitimacy, however they refuse to accept it. Without a working SIM, I can not do any online transactions as all my back accounts are linked to this SIM. they have now send me a 48 hours notice to clear the bill, or face termination. As i've been on international roaming, due to a company assignment, they have been aware of the fact that i am out of the country, yet they refuse to resolve the issue. Please look into this matter with urgency.