[Resolved]  CBSE 10th Certificate — spelling mistake

My son NIKIL THOMAS passed his 10th grade in 2008. from kerala. In chennai region. his name in birth certificate says NIKIL THOMAS. but in his school 10th certificate NIKHIL THOMAS. HIS PASSPORT SAYS NIKIL THOMAS. Now i send the required papers to chennai cbse office and they rejected the request saying ,in the admission book it was written NIKHIL THOMAS. this was a clerical mistake. now i send the school pricipal to chennai with the documents but the RESULT IS SAME. now what should i do? could u pls help me in this regard.

with regards: Thomas pullazhiyil mathew.