Miss Call

How do you guy treat miss call? Do you return miss call? Or you just ignore it since you might feel that if there is something important, the caller should drop sms instead of expecting the receiver to call back when there is a miss call? Anyway, different people might have different way to approach miss call. So, I guess I shouldn't have the attitude to expect people to call back. SMS should be a better way to communicate instead of calling a number for a few times, and expecting someone to return your call, however at last there is no one returning the call.