In a case pending at the national Visa Center, the client's son should be under 21 under the child status Protection Act(CSPA). However, NVC made a mistake calculating the child age and refused to issue a fee bill so the case can move ahead. After we took over the case, we tried many different ways to communicate with NVC and finally, 4 days before the one year deadline NVC issued the fee bill. Our client's son's eligibility as a child under 21 is protected. It is almost certain that if the client continued her own effort without our strong legal advocacy, her son would lose his eligibility. The result of losing his eligibility would mean he has to wait for many more years to immigrate to the United States.