[Resolved]  Reliance Communications — worst service, invalid SIM

I took reliance GSM prepaid connection 10 months back, I didn't use it for sometime, from November 2009 I've started using it,spent about Rs. 140 for pay per call service and topup. after 20 days it got disconnected and shows invalid SIM. When I called customer care they directed me to reliance mobile store. When I visited reliance mobile store they told me to contact customer care, It's a back and forth within their customer care centres.
Please help me in this regard to get my connection activated.