India Post — pan card not reached even two weeks after expected delivery date

Dear madam/sir,
I applied for pan card through nsdl, & my pan card was dispatched through indian speed post on[protected], via airway bill number # ea[protected]in, but still not received the same also your online tracking is saying not a valid number. The message from nsdl said that expected delivery date is[protected] but the date today is 2-9-2017. Please send my pan card asap and let me know how can i track the pan now.

Manpreet singh
Airway bill no. Ea[protected]in
[protected]
Ack. Number # n-[protected]
Email - [protected]@gmail.com