Airtel — basic calling facility

Address:	560037
Website:	NA

I have raised this issue multiple times with airtel. I belong to bangalore. Often when i try to call a number outside bangalore, it gives me a message "std/isd facility is not available in your phone". This doesnt happen always though. I have raised this complaint with multiple times with airtel but no use. The latest complaint number that i raised reference number is 87982696.