When I will receive Passport closing letter so that can apply new?

sir i applyed for my daughter passport but deu to surname i closed my file in passport den they said they will send me closing latter by post once u got closing latter after i can apply again so let me know hw many days they will take to send closing latter

Dear guest ,
The passport office needs around 10-15 days to send a closing letter if not yet received than do visit the regional passport office to know the reason and also inquire about the all the details for re applying of the passport.