Panind — non issue of duplicate pan card

I have lost my pancard no. Aabpg9326l & applied for duplicate pancard by paying necessary fee & submitting documents viz. Old pancard, aadhar card, passport & my 49 years old ssc certificate, which ofcourse not clear. But time & again receireceiving mails from panind, not accepting my documents & asking for the documents, which i donot have. I am income tax payer & have sent return acknowledgement.