Nsdl E-Governance Infrastructure — pan card number forgot

Address:

Khammam, Gandhi chowk, Prakash Nagar, Khammam, Andhra Pradesh

Sir speed post is not delivered my pan card and i don't no my pan number i have only acknowledgement number i submitted my acknowledgement number please send my pan number sir. It's very important to my further studies sir.
My mobile number: [protected]
Dob:[protected]
Name: peddinti santhosh
Please help me i have only acknowledgement number i don't no pan card number i don't recieve e pan my mail. I want my pan number