Airtel — sim card service disconnection

Sir, i am r. N. B. Koteswara rao bearing mobile number [protected]. I have this sim card in 2010. I was get portable to idea network. On[protected] my service was discontinued, i consulted idea customer service they said it was expired,, this number belongs to airtel network so you can consult airtel office. I also consulted airtel office they are telling that sim sard was in active, you can't get this up to 90 days. I humble request is to provide my sim card, because i am business man my dealings are going through this number. My alternate numbwr is [protected]