I had lost AIRTEL sim card on 16th of Sep 2008, late night. I spoke to the consumer center to block my card so that it is not used for any illegal activities. But they asked me to visit an Airtel relationship center and didn't provide me their head quarter's number. They said they don't have it. I insisted, but they still didn't! How is it possible that the customer care doesn't have this number! I updated them regarding the current terrorist situation in Mumbai, and requested them to block the card for a few hours so that I could find nearest relationship center and go forward with it. They even didn't oblige on this. Instead, the customer call center representative, one ARSHAD, was very rude and plain. Considering their apathy towards their customers I am hoping that I am able to find a relationship center (and they don't take time to block it) before the card is used for some illegal activities. Nor do they have a separate web page to register our complains.