Feedback Message Board

I applied for correction in PAN card on April 9, 2017. and sent the application form with documents next day through post.
But If i check the status,

"We have not yet received the supporting documents with respect to your application for ''New PAN Card"

I could not call to 020 2721 8080, as it is always busy.
Sending email to tininfo@nsdl.co.in is also recoups backs saying invalid sender id.

Dear Lokesh,

For faster resolution, email us acknowledgement no on customerservice@nsdl.co.in

Dear Lokesh,

Kindly provide us with your 15 digit PAN acknowledgement number to check the status.