In googlapps i choosen 2-10option i created 7user in that my small organization, but googleapps send the billing emails to me why? i dont understand please it shows a problem for me. Give me any solution
It's not clear to me what your problem is — did you not expect to be billed for this service, or do you want the billing emails to be sent to someone else?
Google Apps is not free anymore. If you create 7 users, you have to pay for each (and every one you create forwards).