Airtel — My sim is showing no service for more than 10 days

My airtel number is +91 [protected].

Hi, Iam citrarasan using Airtel no.[protected].My SIM is showing no service for more than 10days. I suspected my mobile and confirmed with the service centre that there is no problem with the device. Then I bought a new mobile but still the same problem is there. I don't know what happened with the airtel. Even customer care executives are not ready to accept that there is problem with the Airtel. I am getting different answers each time whenever I called them.At least Airtel should inform customers through emails about the problem. I think it's the time to move to some other network.