walikum salam zahra.

You should visit NBP branch where you had deposited your fee and talk to them regarding your issue. Usually one copy of chalan form is kept in bank what they told me. So you can get photo copy of chalan form. Just tell them date / chalan form no. and your name. They will certainly help you . Do it ASAP.


wish you good luck.


Regards

__________________
Ramsha magsi