Airtel — missed digit due to my scratching of card

I am an airtel network user trying to load an airtel card this morning on an attempt to scratch the card to use i scratched off some of the digits and this have pose to be a barrier for me to load my phone for use. Please i need help to get the digits back so as to enable me load my card for use. If a serial number of the card is need, i would be available to provide it. Any infirmation needed am available. Awaiting a fruitful solution