sketch available on interface software is not working.
What sketch? You failed to post a sketch.
GSM lidrary is not working.
It almost certainly is. Your hardware is not working, or your sketch is not designed to work with your hardware. What, exactly, the problem is is impossible to determine when you provided nothing but a bunch of whining.
it is urgent please help....
I waited until the last minute to do my homework, and it's now urgent to me and no one else...