First Flight Couriers — pan card not received no update after several mail

Address:

Ranga Reddy, Andhra Pradesh, 500084

I have applied for a duplicate Pan card and that has been dispatched by NSDL through First Flight with AWB No B903Z9930639. It has been showing the same status since last 7 days. I mailed the first flight and the reply has been addressed to someone called Rukshar but since then No reply. I have mailed them repeatedly requesting for an update. More over the Hyd customer care number seems to be invalid as well as the mail id. Now I don't have any way to connect with them and find out the status. This is a very important document and without this many things are pending. But first flight seems too rude to even look at the mail and reply me back with an update.