Aircel
Says simcard rejected

I bought an aircel prepaid simcard and used it for an year. I lost the sim card some day. I enquired with aircel customer care how to recover it. He said it is free of cost and can be recovered from any customer care office. But when i reached the office, he demanded 100 rs. I gave him anyway. But after two days, when i kept in my mobile. It says SIMCARD rejected. When i asked him, he says you kept simcard in your pocket so it is rejected.